Yixing and Luhan are not only assassins of the Order, but also best friends, roommates, and lovers. So what happens when Yixing is told that Luhan has gone rogue and given twenty-four hours to assassinate him?  

Luhan and Yixing were meant to be... right?

Perhaps saving Luhan was the worst mistake Yixing ever made.

After two years, Luhan is still not over his ex-boyfriend, and Yifan insists on setting him up.