The assassin after Jooheon’s life is none other than Julian’s younger sister, Nina who had been brainwashed to become a bloodthirsty killer! But Julian isn’t the only one with sister problems, as Jooheon must reconnect with his long-lost twin sister who he had been secretly protecting. But because of his desires to keep his sister out of the world of relics, she doesn’t even know who Jooheon is and getting her to come along with him will come with a sea of troubles. Meanwhile, Jooheon gets wind that Pandora is hosting an art exhibit! Never missing a chance to harass his enemies, Jooheon wants Jaeha to do what he can to get into the exhibit himself. But will Jaeha’s expert forging skills trained him enough to enter the world of fine art? Or is he being set up for public humiliation?