Nayeon, the bratty heiress of ImTech, is put under the care of the cold Team Leader Myoui, who will teach her the ropes about handling the family business. Things get awkward when they recognise each other from a one-night stand. This story is originally written by: NabongsBunny

Chaeyoung's quiet high school life gets turned around when her single father remarries, to a 30-year-old woman named Myoui Mina. Chaeyoung doesn't like her new stepmom at first, but things don't stay that way for long.

Following a conversation that delves into the topic of intimacy, Mina proposes the idea of forming a 'sexual agreement.' Little did she know, that her agreement with Chaeyoung for a casual encounter, would have a profound impact on their lives.