In Enter the Ninja, a martial arts expert named Cole travels to the Philippines and goes undercover to save his friend's wife from a powerful mafia boss. Along the way, he utilizes his ninja skills to take down his enemies and protect the innocent.

Revenge of the Ninja is a 1983 action crime drama thriller film about a ninja who seeks revenge against a masked killer who murdered his family in Japan. He moves to America with his young son and opens a doll shop. Unbeknownst to him, the doll shop is a front for a drug smuggling operation run by the local mafia. The ninja uses his martial arts skills and ninja weaponry to take down the mafia and seek justice for his family.

When a female ninja is possessed by an evil spirit, she seeks revenge against those who have wronged her. With her supernatural powers and ninja skills, she goes on a slashing spree, using weapons like ninja stars, a katana sword, and poison to defeat her enemies. Along the way, she faces danger, risk, and peril, encountering police motorcycles, shotguns, and explosions. Will she be able to escape her torment and find vengeance?