Submarine Super 99

Synopsis

Dr. Oki, the genius creator of an advanced submarine, goes missing under mysterious circumstances. His son, Susumu, believes a sinister organization is to blame. Having extensive knowledge of his father's invention, the Super 99—including its systems, weapons, and capabilities—Susumu is convinced that finding his father requires exposing the secret Helmet Party and stopping their schemes. Together with his friends and members of the Marine Corps, Susumu sets out on a dangerous underwater mission, unaware of the serious dangers that lie ahead.