Yuki "Snowy" Itsuki, a 16‑year‑old U.A. student with Celestial Sun/Moon Dragon powers, is the only one capable of defeating a uniquely dangerous villain. During a city ambush, her allies—Toshinori "All Might" Yagi, Shota "Eraser Head" Aizawa, Keigo "Hawks" Takami, Enji "Endeavor" Todoroki, Nemuri "Midnight" Kayama, Hizashi "Present Mic" Yamada—are separated fighting other threats. Right after she wins, All For One emerges from the shadows and reveals her devastating secret: her powers are tied to her captive parents, and every time she uses them, she drains their life force. Her dragon spirits warn her never to tell anyone, or she will be feared and her parents completely lost.