Introvert Yuan transfers to a new school. There he meets Jackson and Junkai, who are responsible for the big  changes in his life.

Junkai always had a harsh life. Getting beaten up by his father and being unloved. Yuan always stood on his side, even when Junkai took the wrong way.

Justin records Yanjun, a cruel assassin, killing. Things get complicated when Yanjun biggest enemy, Xukun, lays his eyes on Justin and his brother Zhengting (bad description, but the story will be fine)

It was a rainy day when Jongup met Daehyun (sorry if the description is not good, the story will be good)

One unlucky night Zhengting happened to witness a killing of the notorious serial killer of young males. He quickly stumbled upon a young detective named Lin Yanjun, who really avoided the case. What will happen when Xukun the leader of the team puts him in charge?