A cruel and vicious judge, who wields power only for herself, meets a warm and cheerful detective who puts the victims first.

After a crash erases a decade of his memory, a man wakes up to find his former rival claiming they’re lovers and must uncover the truth behind the relationship he can’t remember.

After 10 years in the US, Hu-young returns to Korea and meets his first love, Hong-ju, at a café by chance. Just as the window into which Peter Pan flew happened to be Wendy's room. Just as the prince happened to find Cinderella's glass shoes. As if nothing had changed in the past 10 years, Hu-young becomes clumsier only in front of Hong-ju. It’s like going back to the age of 19 when he met his first love, Hong-ju. Hu-young and Hong-ju’s days, which have faded a little, begin to turn into vivid rainbow colors again.

Ju Eun-ho is an unknown announcer with 14 years of experience. She struggles to get the chance to have her name recognized by the public. She also has another personality, Ju Hae-ri, due to a deep wound in her heart. Her alter-ego, Ju Hae-ri, is super positive and works as a parking attendant. Jeong Hyun-oh is Ju Eun-ho's ex-boyfriend; they dated for a long time but broke up. He became a star announcer as soon as he joined the broadcasting station and is the most-liked announcer by the public, but Jeong Hyun-oh also carries a hidden wound in his mind that he has never shown to anyone. Somehow, Ju Eun-ho and Jeong Hyun-oh reunite and help cure each other's wounds.

Chinese secret agent Da-hee receives intel that a large number of illegal firearms are being smuggled into Korea and is sent to investigate the case. She meets Su-han, who is supposed to help her with the case, but due to his lackluster skills they fight over trivial things. But as their witnesses are suddenly murdered, the two of them quickly become the prime suspects.