Jisung is part of the super hero team 4RACHA. You had the leader, Bang Chan, and then Changbin, Seungmin, and him.

Jisung was sort of the sunshine/baby of the group. He also made all the gadgets and all.

On the other side, you had a villain gang called Stray Kids. You had the leader, Minho, and then Felix, Hyunjin and Jeongin.

Right now, 4RACHA had finally takes a day off. They were at a party. Bang Chan, Changbin and Seungmin were sitting and drinking, when they couldn't see Jisung anymore.

Then, they found him, on the dance floor. Dancing (basically grinding) against an equally drunk Minho.