The second season of To Be Heroine deviates from its predecessor's comedic action style and introduces fresh characters and a new plot. You is about to leave her home when she mysteriously finds herself transported to a surreal realm. She stumbles upon a defenseless eight-year-old boy who is completely naked, and is soon ambushed by mafia assassins who are after the child. The situation becomes even more perplexing when she learns that the mafia boss is also an assassin. Who are these bare-skinned youngsters? Why has You's footwear transformed into a protector? What kind of world does the young boy come from, and why is he unclothed? As she tries to outrun her attackers, You loses one of her shoes which, unbelievably, transforms into a defender and saves her from harm through some unexplained magic.