The Return of Bowser (mario x mlb)

Bowser escapes his cage in the Mushroom Kingdom, daring to seek revenge in Mario's world to get back at the brothers. Taking a warp pipe, he lands in an unknown city: Paris. To his luck, Cat Noir, one of the city's heroes, accidentally kicks him against the wall, rendering the power of the blue mushroom useless.

Now restored to his old self, Bowser takes Cat Noir as prisoner, learning of a power he could take, more powerful than the Super Star could have ever been: Ladybug and Cat Noir's Miraculous.

Ladybug is the only one standing in his way now, recruited by the brothers and the princess to save Cat Noir and defeat Bowser once and for all.