Kim Mingyu wants to work as a bartender. He knows he can pull the job off. He works hard and he's good with strangers.

Jeon Wonwoo is afraid of making contact with strangers ever since the 17th of July, 2013 - his 18th birthday. He just wishes to find a person other than Minghao that manages to break the walls he build around himself.

Xu Minghao stopped thinking about what he really wants ever since his parents died and he had to move to Korea. All he can think about is to protect Wonwoo and find someone or something called Cassimilia Juanera Eev. 

Wen Junhui tries everything to get rid of his past and finally start a new life, preferably as a dancer.

Yoon Jeonghan doesn't know how to have a proper relationship or what love really is. The job as a butler in the luxurious restaurant wasn't his first choice either.

Hong Jisoo is tired of playing the role of the good, polite genlteman who never makes a mistake. He wants to finally find the courage to leave the family and be himself.

One day Minghao sneaks out of the apartment he shares with Wonwoo to get a bit fresh air and think, only to bump into a boy in hoody who seems in quite of a hurry.

Neither knew it then, but this little accident caused six lifes to be turned upside down.