Marianne meets Joonas' girlfriend Julia, who is back at school after a difficult summer and early autumn. At Dima's house party, Marianne meets his elder brother Vadim. An unexpected event brings a gloomy turn to Marianne's life

Laura Kask,a senior investigator, is investigating the circumstances of Julia's disappearance. There are signs that something bad may have happened to Julia. Marianne has feelings for Darja, and receives a message from an unknown number

Riho learns from Darja that Marianne has caught the eye of a gang of mediators of "lucrative gigs" led by Vadim. Marianne's reputation among her classmates takes a hit when the blackmailer publishes new information to the entire school.

Joonas blames Marianne. She gives in to the blackmailer's demands and pinches money from the most accessible place - from her stepfather. The police investigation takes an unexpected turn when Laura meets Julia's parents.

Marianne receives good advice from her Tallinn girlfriend Nastja and from her father, diplomat Harri Lepik. She also visits Vadim, and passion ignites between the young people. Marianne talks to her father about painful topics.

With her new phone from her father, Marianne sets to spy on Joonas as the main suspect. Laura also spies on Joonas. A conversation between Riho and Maria has unexpected consequences. The unknown contacts Marianne

Marianne hears valuable information from the recording from Joonas. With her investigation, Laura ends up at Riho's summer cottage, where she finds Julia's sister Aleksandra, who is concealing Joonas' whereabouts.

Most of the criminals are in Arkadi's warehouse and Joonas and his gang have tied them up. Unexpectedly, Julia's father Sergei intervenes. There is plenty of tragedy and drama when masks fall and a few mysteries are solved. But not all.