On Moonbase Alpha, the strange deaths of workers is being investigated which leads to the discovery of energy leaks at 2 different sites where Earths atomic waste is being stored. A race ensues to move waste at the second site before a catastrophic event occurs.

When the Moon heads directly for an alien planet, its queen convinces John to let the collision occur for the sake of her people's evolution and the Moon will be unharmed. Now John needs to convince his own people of the same.