The goddess is formulating a plan to stop the Hero's rampage. After defeating the Demon Lord and saving the world, next he will use his power to destroy the world. The goddess has decided to summon the souls of professionals from other worlds and reincarnate them. She summons the soul of the world's finest special forces soldier who excels in combat and asks him to defeat the Hero, but--

Lugh got a assasination request for Dia. And the principal is Count Viecone, who is Dia's father and Cian's old friend. Cian expects Lugh can finish the assasination. But if he refuses it, Cian will do it with his own hands.