Norio Yamashita

A Japanese bullet train is threatened with a bomb that will explode automatically if the train slows below 80 km/h, unless a ransom is paid. Police race to find the bombers so the train crew can learn how to defuse the bomb.

Thunder Mask (サンダーマスク Sandāmasuku) is a partially lost tokusatsu series produced by Toyo Agency (now Sotsu Co. Ltd) in 1972. Out of the whole series, episodes 1, 3, 6-7, 12-13, 19, and 26 are known to have been preserved. After conquering numerous planets, the evil Devil Dekanda sets his eyes on conquering the earth, but three scientists manage to find a superhero called "Thunder Mask". Thunder Mask goes on to battle the numerous monsters sent down by: Devil Dekanda.