In a superhuman/Mobian society, a dark abandoned project created by Dr. Gerald Robotnik is found by a group of heroes reveling a boy that had been kidnapped at the age of four now has been forever transformed into the ultimate weapon. Shadow. And after escaping from the heros and suffering from amnesia, Shadow seeks to find his purpose and why dose the name Maria keep coming to him? Considered a rogue vigilante, Shadow endsup saving many people and making new friends and even makes a bunch of girls fall for him including Momo Yaoyorozu, Fuyumi Todoroki, Ochako Uraraka, Mawata Fuwa and many others as Shadow has an unexpected encounter with All might himself, the symbol of peace offers the human that looks like a hedgehog a chance to become a real hero and to discover his true purpose.