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La Liga Protectora de la Naturaleza (The Nature Protection League) is a team of superheroes who need to face the villainous Toxic King, whose only goal is to destroy nature and make the heroes fail.
During a rainy night on their apartment, two girls hear the notes of a piano vibrating on the upper floor. One of them goes upstairs to find out where the melody comes from and faces a series of paranormal events.
