In a world full of evil and mysteries, Mitsuki Sorano, a humanoid boy with an unknown origin, must face supernatural forces and criminals from different worlds alongside his friends, the "Prodigies," while seeking answers about who he truly is. With a charismatic and carefree personality, he is accompanied by Allivy, the goddess of Elyria (The Sky), who serves as his mentor and guides them through their complicated and lengthy journeys.