Thunder won a contest that he never remembered entering. Upon getting to the mansion he now owns, he soon learns that it's haunted. In order to find his missing big brother, Sparky, Thunder will first have to do a little ghost hunting. And face an old enemy.

A crossover series based on the game "Luigi's Mansion Dark Moon" and the anime "Pokemon Sun and Moon"! Lillie must save Evershade Valley from the evil ghosts by restoring the Dark Moon! Each chapter will be based on each level from the game.

Meloetta and Melody Pianissima are two very musical girls who come from different worlds. But when Meloetta gets transported to the mansion, she meets Melody, and they literally have a blast together!

Piplup is bored at his home in Seaside Hill when he gets sent the Poltergust 3000 from Prof. E. Gadd, who desperately needs help as a strange new batch of ghosts invaded the Boo Woods and not only threaten him, but have taken Pikachu too! It's up to this plucky but not so lucky blue water type penguin to suck it up and save the day... yeah right!