Harper Rye can, to put it simply, read minds. It's not something she consciously does. Her quirk simply allows her to pick up people's thoughts, regardless of whether she wants to or not. The fact that she can't turn it off makes having such a power nearly unbearable. To make matters worse, she's somehow managed to fall under the radar of the super-genius principal of UA high, Nezu. He's sure there's a traitor amongst them, and is convinced Harper is the key to finding them and shutting them down. Plunged into a world she never wanted to be in, Harper finds herself on the fast track to becoming a hero, maybe managing to make some friends for once in her life, and quite possibly saving Japan from near-certain destruction.

Marcie is an oddity in her village, the daughter of a widower with both village and outsider blood in her veins. She cares for her drunken father, and struggles to fit in with the rest of the village. Everything changes when she comes across two dragons, a mother and her new born, and unwittingly becomes the Tamer of the baby dragon when his mother dies. This new unlikely bond completely changes her life and opens doors to her future that she would have never thought possible whilst also causing her pain and heartache.