Six months after the events of Monsters, Inc., the city of Monstropolis is now fueled with the sound of laughter. Tylor Tuskmon, a mechanic on the Facilities Team, dreams of working alongside his idols Mike Wazowski and James P. 'Sulley' Sullivan.

When world-famous air racer Dusty learns that his engine is damaged and he may never race again, he must shift gears and is launched into the world of aerial firefighting. Dusty joins forces with veteran fire and rescue helicopter Blade Ranger and his team, a bunch of all-terrain vehicles known as The Smokejumpers. Together, the fearless team battles a massive wildfire, and Dusty learns what it takes to become a true hero.

Tinkerbell wanders into the forbidden Winter woods and meets Periwinkle. Together they learn the secret of their wings and try to unite the warm fairies and the winter fairies to help Pixie Hollow.