Kagaku ninja tai Gatchaman

Galactor has built a base on the mountain K3 which is located in the Himalayas. From there, a magma mega cannon shoots through the Earth and attacks cities all over the world. The only way to penetrate the base is through the North Wall, which is impossible to climb however, because it's 3,000 meters high and vertical. Suffering under the fact that he has a cyborg body, Joe is about to despair, and takes over this dangerous task when Nambu orders it. Ken is not happy about this, the Science Ninja Team has always been a team after all! That Joe is a cyborg and can handle things on his own is no reason to send him alone. Joe however coldly refuses when Ken and the others offer to accompany him. Jun follows Joe and he finally accepts her company. But because of Jun's carelessness, Galactor notices them and the two of them are swallowed by an artificial avalanche. Additionally, they can't move because of the cold. They are surrounded by the enemy, and don't know what to do anymore.