One day

After wife's death, Kang-soo is left devastated and lost all hope. When he finally returns to work,insurance company, he is assigned to Mi-so's case, a woman in a comma. As Kang-soo visits her at the hospital to look into the details behind Mi-so's accident, he meets a woman who claims to be Mi-so. Through his interaction with her, Kang-soo makes a shocking discovery: that Mi-so is only visible to him and no one else.After a tragic accident, Mi-so 'wakes up' in a hospital only to realize that it is her 'spirit' that had woken up, not her body. As she watches herself laid on the hospital bed in coma, she starts seeing a new world through the eyes of her spirit for the first — time in her life. Through Kang-soo, the only person who can see her spirit, she wants to fulfill her life-long wish...