Kuroo Tetsuro is a big CEO of some big company. And he has a girlfriend named Sam. He loves Sam dearly and always lets her spend his money.

Until one day, Sam's best friend of the opposite sex named Avan suddenly returned home after Avan's family moved somewhere else. Avan moved back because of Sam. but Avan knows Sam has a boyfriend but Avan is still determined to win her. And so Kuroo and Avan argued every day just to keep Sam for themselves. They are arguing in Sam's house.