Ja-yoon is a high school student who struggles with memory loss after she endured some unknown trauma during her childhood. While trying to uncover the truth, she is unwittingly dragged into a world of crime and finds herself on a journey that will awaken many secrets hidden deep within.
Jin-hyeok opens a cake shop in an old antique shop, hiring Seon-woo, Korea's best pastry chef, who fell in love with him in high school. Also there, are Su-young, crushing on Seon-woo, ex-boxer Ki-beom, and Seon-woo's French ex-boyfriend.
Mi-ja, who has been taking care of a retired teacher, Ms Park, invites several of her former students to her house 16 years after their graduation. Since the end of her teaching career, Park has been residing in the countryside, suffering from an illness while an ex-student, the kind and pretty Mi-ja cares for her.