A bunch of high school misfits in Hawaii, introduced by their new teacher, attend a science fair in which they draw up inspiration to build their own solar car and win a trip to compete in the 1990 World Solar Challenge in Australia.

Acting on impulse, Claire Dennison (Willa Ford), enjoys a brief fling with a sexy stranger (a dead ringer for her husband), only to realize that the object of her desire is a crazed, manipulative, and tenacious psychopath.

Dooley and his dog Jerry Lee still are active as a police team with the LAPD. However, years starting and counting Captain Roger Byers thinks they urgently need to do something with their condition. He even forces them to work with a second team: the one of the young Sergeant Welles and her disciplined Dobermann Zeus. Dooley and Jerry Lee thinks they can work without their new partners but a mysterious sharp-shooter forces them to the ultimate cooperation

During a championship baseball match, the three brothers hear that their grandfather in Japan is in trouble, and head out to help him, conceding the match. When they arrive in Japan, they must use all their powers to defend him against his ancient enemy, who has returned to exact revenge.