In a world of wheels, all tracks lead to Hot Wheels City! Strap in with Chase and Elliot, two brothers who spend their days racing the streets in their favorite Hot Wheels. But when a mad scientist unleashes monstrous creations to destroy the city, Chase and Elliot shift into high gear to protect the citizens of Hot Wheels City. Do they have what it takes to save the day? Challenge Accepted!

某户人家，恬静的男孩（Ethan Mora 饰）百无聊赖对着墙壁玩着投球游戏，他侧头望去，母亲（Ydaiber Orozco 饰）正在厨房烹饪，无暇他顾。男孩试图引起母亲的注意，但是母亲太忙了，实在没办法和他玩耍，他只得再度回到原来的位置。这时，他的皮球滚到了地下室的门口。在他没有看见的时候，一支触角样的东西将球碰下了楼梯。男孩小心翼翼步下楼梯，当他捡起球的时候，两根触角却悄然从身后升起，扑向了男孩。 妈妈仿佛听到了什么声响，却仍旧站在炉灶前没有动弹。这时，一根巨大的带着斑斑血迹的触手慢慢向厨房滑来……