Stroker Ace, a champion NASCAR driver, is standing at the top of his career, but is getting fed up with having to do as he's told. In between rebelling against his sponsor (a fried chicken chain)'s promotion gimmicks (like making him dress up in giant chicken suit) he spends the rest of the movie trying to bed the buxom Pembrook.

Three young boys, Rocky, Colt and Tum Tum together with their neighbor girl, computer whiz Amanda are visiting Mega Mountain amusement park when it is invaded by an army of ninjas led by evil Medusa, who wants to take over the park and hold the owners for ransom. Kids and retired TV star Dave Dragon, who made his farewell appearance at the park at the time the ninjas appeared, have to break Medusa's vicious plans.

When a casino owning dog named Charlie is murdered by his rival Carface, he finds himself in Heaven basically by default since all dogs go to heaven. However, since he wants to get back at his killer, he cons his way back to the living with the warning that doing that damns him to Hell. Once back, he teams with his old partner, Itchy to prep his retaliation. He also stumbles on to an orphan girl who can talk to the animals, thus allowing him to get the inside info on the races to ensure his wins...