On Halloween night, monsters begin to assault Dr. Strange in his Sanctum Sanctorum. The Incredible Hulk comes to answer the sorcerer supremes' mystic summons, but the strongest Marvel hero is plagued with random sleeping that changes him back to puny Bruce Banner. The two heroes, alongside the Howling Commandos (consisting of Warwolf, Nina Price, Man-Thing, and Agent Jasper Sitwell) must team up, as the monsters are kids, transformed as such by the evil Nightmare, a demon who rules the Dream Dimension (and looks like Alice Cooper) who plot to use the kids' fear to empower himself, enabling him to invade the waking world.
For a Halloween-themed movie, it's pretty good. The story is interesting, the action scenes are good, and the voice actors all do a good job. The only thing I don't like how the movie has low lighting, making some scenes hard to see if watched on certain devices. But it is a good movie and worth watching.