Once upon a time, not so long ago, the magical world of Lunaria was freed from corruption by the Bond of Light. The Master, who ruled over Lunaria with an iron fist, was defeated, and the Guardians returned home safely after restoring the balance between the Light and Dark.To keep things this way, one simple rule had to be obeyed. But unfortunately, not all can go as planned...One night, fourteen-year-old Marilyn Bellucci disappears without a trace. When her best friend, Lucas Riverdale, finds her again four years later, the two find themselves in another world. A world that needs their help.Being victims of the same spell his father and his friends once were, Lucas and his four friends must save the world of Lunaria and prevent the Master from rising to power once again, while Mari faces the consequences of a mistake her father made long ago.Are these new Guardians up to the challenge, and will they be able to put down the Master for good, or is Lunaria doomed?