Kai seek help from the infamous group of vigilantes to get his revenge. His gang members died together with their founder, Kangta. At first, he just wanted to live normally but he happened to ruin the operation of the vigilantes by meddling in their designated plan. The next thing he knew, he was held captive by them.

Artemis, is the name of the famous vigilantes group in the underworld society. Lead by their so-called Queen, Kang Seulgi. The brain, the planner and the most important piece. Government begged them just to kill any high profile criminals out there, but of course, there's always a price.

"Please, help me." He desperately beg.

"What would I get in return?" The lady stares blankly at him.

"I'll offer my life."