When Will Browning is threatened with military summer school if he doesn't get better grades, he decides to do a science project that will definitely get an A. So he buys some Ocean Pups, unhatched sea creatures that will look spectacular, but he hasn't bargained for the cloning agent that the unscrupulous manufacturers have put in the kit. Next thing he knows there's another him.

Andy "Brink" Brinker and his in-line skating crew--Peter, Jordy, and Gabriella--who call themselves "Soul-Skaters" (which means they skate for the fun of it, and not for the money), clash with a group of sponsored skaters, Team X-Bladz--led by Val--with whom they attend high school in southern California. When Brink discovers his family is in financial trouble, he goes against the wishes of his parents and his friends and joins Team X-Bladz. Brink tries to lead a double life but will be able to pull it off?

After thief Alex Cardo gets caught while stealing an ancient katana in East Asia, he soon finds himself imprisoned and beaten up by the crowd there. One of the guards, Demon, feels upset by Alex appearance and tortures him as often as he gets the opportunity. Alex finds a friend and mentor in the jailhouse, Master Sun, who teaches him a superior fighting style called Iron Hand. When a 'best of the best kumite' is to take place, Demon gets an invitation. Now Master Sun and Alex need to find a way to let Alex take part in the kumite too.