Freedom is a dream of every man and woman. Kero is an immigrant from Asia. Coming to Los Angeles he found himself between two fires. On the one side he is pursued by police and security service. On the other side he is attacked by drug-mafia, demanding money. But the real freedom is the only dream of Kero and a prostitute, that became his new friend.

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.