While the Mall Rats try to carry on after suffering two devastating losses, a strange cult dedicated to Zoot arrives on the shores near the City.

The Mall Rats arrive back home, despondent and still reeling from their loss. Lex, Tai-San and Ebony bring the antidote to the Mall, while Bray brings Danni.

The Mall Rats find themselves harassed by kids desperate for the antidote. Following her destruction of the formula, Tai-San searches for herbs to create her own version of it while the Chosen continue their journey to the City.

Just as the gang are preparing to flee the Mall, Tai-San claims that she has made the antidote. Trudy feels increasingly alone, while an enraged Alice and others arrive at the Mall demanding the real antidote.

Alice takes Tai-San hostage until she is sure that Ellie is on the mend, and when she is, the two sisters decide to move to the Mall, with Alice becoming Tai-San's bodyguard. Meanwhile, the Chosen arrive in the City.

Alice appoints Dal as Chief of the farm in her absence, while Bray and Danni begin arranging a meeting of tribe leaders. The Chosen arrive in the City and move in on the Mall Rats.

Bray, Danni and Ebony attend the meeting of tribe leaders, which goes well until the Chosen arrive and frighten away the other leaders. Meanwhile, Alice becomes concerned about Tai-San, who begins exhibiting symptoms of the Virus.

Alice is increasingly worried by Tai-San's continued illness, while Jack and Ellie search for answers about the Virus much to Danni's annoyance. Trudy appoints Patsy as Brady's official child minder, with disastrous results.

Trudy is distraught following Brady's kidnapping, with Patsy fleeing to escape her wrath. Tai-San is in a critical condition after an explosion in the laboratory and Alice is determined to find proof that KC was behind it.

Tai-San has woken from her coma, but is suffering from amnesia. Still distraught, Trudy is outraged by the warm welcome Patsy receives when she returns to the Mall, and the video Jack and Ellie discovered proves to be highly significant.

Bray finds it difficult to deal with Tai-San's decision to tell him the formula, Jack and Ellie investigate the theory that the Virus came space, while Danni creates a Bill of Rights just as the Chosen invade Alice's farm.

After being confronted by the Chosen at the farm, Dal arrives to tell the tribe about them and they deduce that the Chosen stole Brady. Salene's frustration at Ryan's aloofness sends her off the rails, while Jack makes a shocking discovery.

In order to get the Guardian on her side, Ebony tricks Trudy into following her to the Chosen's lair. Jack and Ellie try to find the missing videotape and theorize about the Virus, while Salene and Ryan continue to butt heads.

With Ebony's fate in Trudy's hands, the pair reminisce about their lives with Bray and Martin before the Virus.

The tribe discovers Trudy is missing and Tai-San suggests the Chosen as culprits. Jack and Ellie have trouble expressing their feelings for each other. Meanwhile, at the Chosen's lair, Trudy and Ebony hatch an escape plan.

Ebony makes Bray a proposition, while Trudy is forced to join the Chosen. Will she ever see her friends again?

Reeling from his loss, Bray lashes out at Lex, who he blames for Trudy's disappearance. KC, Patsy and Cloe go trading, Ellie tries to smooth things over with Jack, while Ebony resorts to blackmail to get what she wants.

Ebony is irritating everyone with her newfound authority, while Lex finds himself unneeded and unwanted. Jack and Ellie continue to blow hot and cold for each other and Ryan tells Salene about his life with Lex before the Virus.

The tribe is occupied with the tribal leader gathering which they are arranging at the Mall, and Danni is confident about her Bill of Rights. Jack is jealous of Dal and Ellie's newfound closeness, while Ebony hatches a deadly scheme.

A deflated tribe buries Bob, with Tai-San convinced someone tried to poison her and the finger pointed at an unlikely person. Jack and Ellie begin work on the news sheet, while Salene tries to help Lex.

Lex's actions have severe consequences for him, while Ebony's questions at Danni's trial lead to a startling revelation.

Danni's trial reaches its conclusion, prompting more questions than answers. Jack's jealousy about Ellie and Dal continues, Bray tries to make amends with Tai-San and Ebony's scheming intensifies.

The tribe host a trading market. Danni worries that Jack and Ellie will find information related to her father's work, while Patsy and Cloe get a new dog, and Lex meets his match.

Danni's secret is out, with Bray's authority called into question. Spotting an advantage, Ebony plots to take over the tribe, while Lex finds himself double crossed.

Ellie is frustrated by the tribe's refusal to print the truth about the Virus in the news sheet, while Danni is enjoying her new job as Judge, and Spike is back, looking for revenge.

Dal is frustrated with his work party, who believe that the Virus is gone. Ebony is Spike's prisoner, Jack and Ellie are in romantic bliss, while Ryan proves to be a successful teacher.

Tai-San has a dream about Ebony being imprisoned, but finds it difficult to convince the others that she is in danger. Ebony herself continues to have flashbacks about Zoot, and Patsy and Cloe decide to find boyfriends.

The tribe find that they are no longer trusted, with the other tribes turning against them. Ebony is an emotional wreck after her ordeal with Spike, and Dal finds himself the object of Patsy and Cloe's affections.

The Mall Rats are pleased to be trading and working with the other tribes again, Patsy and Cloe continue their pursuit of Dal, while Tai-San tries to help Ebony recover.

Ellie is determined to print everything the tribe knows about the Virus in the news sheet, Salene is frustrated by Ryan and his pressuring her to start a family, and Lex's incompetence costs the tribe dearly.

The Mall Rats host a dance party for all the tribes. Salene is still angry with Ryan, Alice tries to impress Lex, and Ebony is determined to bring the token thief to justice.

The Mall Rats encounter revolt from other tribes, who are tired of working and threaten strike. Ebony opens her heart to Bray, but he only has eyes for Danni. Ryan stupidly makes Lex fall off the wagon, and there is an unexpected return.

The tribe is astounded by the return of Trudy, who remains cagey about the details of her escape. Most wonder whether the Chosen will come for her, whereas Ebony sees it as an opportunity to exert power.

Alice lies trapped in the farmhouse, Ebony continues to throw her weight around, and Ryan tries in vain to make up with Salene.

Bray and Danni prepare for the tribal forum, Alice encourages Lex to improve himself and Trudy forgives Patsy her mistake, but arouses Salene's suspicions in the process.

Salene feels guilty about not apologizing to Ryan before he went story hunting with Ellie. Meanwhile, Alice falls further for Lex, Trudy's behavior becomes more erratic, and Ebony decides to move out of the Mall.

Bray is confident the Mall Rats can bring peace to the City, but only if they allow Billy-Boy, the leader of the Jackals, to trade at market. Alice makes a move on Lex, Ryan decides to move on, and Jack is given a special assignment.

Salene finds Ryan just in time, and Jack's spying gets off to a bad start when he is almost caught by Ebony. Cloe's suspicions about Trudy grow, while Tai-San's interference in Lex and Alice's relationship only complicates things further.

Trudy reveals a twisted side by sending Cloe a demented gift, Tai-San is conflicted in her feelings for Lex, with both trying to let Alice down gently, while Ellie finally hears news of the Chosen.

The tribe is overjoyed by the news that the Chosen have been defeated. KC gets his rat race after all, but he may not have the sure fire winner, while Jack has enlisted Dal to help him spy on Ebony at the hotel.

Lex is ill the morning after his meal at Trudy's, arousing Tai-San's suspicions. Ryan proposes to Salene and Ebony hosts a pool party. Meanwhile, Wolf passes Trudy's message on to the Guardian, who plans terror for the City.

The Chosen continue to kidnap people all over the City, with a little boy alerting Ellie to the threat. Tai-San ends her secret romance with Lex, Trudy loses her temper with Cloe, and a troubled Salene seeks comfort away from Ryan.

Salene is left heartbroken and despondent, Lex breaks the news about his secret relationship to Alice, but neglects to tell her that the object of his affection is Tai-San, and more about Trudy's motives is revealed.

The Chosen prepare for their final assault on the City by targeting Ebony, Dal opens his heart to Ellie, Bray goes in search of Salene, and Alice incorrectly guesses the identity of Lex's mystery lover.

Ebony vows to clear her name, the Jackals disrupt trading at market, Alice gets herself into trouble, and Salene finds help from an unlikely source.

The Mall Rats are worried when the market is abandoned by the other tribes, Alice continues spying for Ebony, Salene brings May back to the Mall with her, and Lex finds himself accused of murder.

Trudy successfully manages to deflect suspicion away from herself, Ebony continues the search for the traitor in her outfit, and Lex has a question for Tai-San.

It is the day of Ryan and Salene and Lex and Tai-San's double wedding, and the Chosen have plans for Ebony and the rest of the Mall Rats.

With Ebony missing and presumed dead, Patsy is racked with guilt. Salene has regrets about her wedding, and Alice finds herself a prisoner of the Chosen.

Ebony demands that Patsy tell her everything she knows, Cloe discovers another of Trudy's secrets, while Bray, Danni, Lex and Ryan find themselves in mortal danger.

Danni and the other tribe leaders are prisoners of the Chosen, and the Mall is invaded.

With the rest of the tribe imprisoned in the hotel, Bray, Lex, Ryan and Jack plan to break them out and save the City from destruction.