It's about a boy named Omar who was kidnapped and taken to another world through a mirror. There he is tested on a chemical called Cilcro, but later an incident destroys the facility he's in. Omar is later found unconscious and brought to Thorp Hospital where he is diagnosed with amnesia. Omar is given to Mr. Sotsuto as his caretaker and later goes to Spirito Academy where he meets new friends and faces new challenges.