Season 1
Gullible yet cheerful Shin Ji-hyun is living a perfect life: she is the only daughter of wealthy, doting parents and is surrounded by supportive best friends. She is also engaged to be married to the perfect man, Kang Min-ho, in just a few weeks. Meanwhile, Song Yi-kyung is in an existential crisis following her boyfriend's tragic death. She works third shift at a convenience store, sleeps in the afternoon, and often spends what little time she has left in the day contemplating suicide.
Episode 1
Shin Ji Hyun prepares for her wedding to Kang Min Ho, but an unfortunate accident causes her to end up brain-dead in a coma.
Episode 2
Ji Hyun relishes her new body when she possesses Song Yi Kyung. She applies for a job at Han Kang's restaurant.
Episode 3
Ji Hyun discovers Min Ho and In Jung's affair behind her back, and their schemes against her father's company.
Episode 4
Desperate to thwart Min Ho and In Jung, Ji Hyun races to find her seal. She learns of her best friend and fiance's long history together.
Episode 5
Depressed about her reality, the Scheduler takes Ji Hyun shopping to cheer her up. Meanwhile, Min Ho can't shake off a growing attraction towards Yi Kyung.
Episode 6
Han Kang continually butts heads with Yi Kyung, who continually reminds him of Ji Hyun, in an attempt to cover his feelings.
Episode 7
Ji Hyun becomes Min Ho's housemaid using Yi Kyung's body, but her activities lead to negative consequences for the real Yi Kyung.
Episode 8
Yi Kyung's presence at Min Ho's home unsettles In Jung. Meanwhile, Han Kang can't forget Yi Kyung despite firing her.
Episode 9
Ji Hyun's father's brain tumor worsens, prompting him to write up a new will leaving the company to Min Ho.
Episode 10
Her 49 days almost halfway over, Ji Hyun faces the very possible reality that no one around her truly loves her.
Episode 11
Ji Hyun goes on a search to thank the person who cried for her, while Kang searches for the truth about Ji Hyun/Yi Kyung.
Episode 12
Ji Hyun starts to lose control of Yi Kyung during the day, which leaves Yi Kyung confused. Yi Kyung takes a stroll on memory lane.
Episode 13
Worried that Kang is onto her secret, Ji Hyun is more determined to take care of the Min Ho situation before her 49 days.
Episode 14
Ji Hyun learns about the Scheduler's past and confronts him about it, which causes him to put things in perspective.
Episode 15
Yi Kyung recounts her backstory for Dr. Noh, but they are not alone. Kang takes Ji Hyun to visit her father in the hospital.
Episode 16
Yi Soo recounts his heartbreaking his past with Yi Kyung. Kang and Min Ho fight over Ji Hyun while Seo Woo confronts In Jung with the truth.
Episode 17
Both Kang and Ji Hyun race to stop Yi Kyung from running away. Min Ho tries to exorcise Ji Hyun's spirit.
Episode 18
Kang and Ji Hyun deliver the seal to her mother and attempt to tell her father about Min Ho. Yi Kyung also receives gifts from Ji Hyun.
Episode 19
Ji Hyun receives her third tear which allows her to wake up from her coma.
Episode 20
Ji Hyun is able to recall her adventure during the past 49 days and receives a visit from Yi Soo, but why?