Captain N, Princess Lana, and Kid Icarus are on the fortress planet of Zebes attempting to stop a shipment of zeebetite which is the energy source Mother Brain needs to survive. They run into bounty hunter Samus Aran who shows a fondness for Kevin while they fight their way through the world. Upon finding the zeebetite, Mother Brain offers Samus 10 million credits if she delivers the N-Team to her and leaves the shipment alone. She accepts but as the prisoners are being hauled towards the Metroid asteroid it turns out the pilots are Kevin and Samus and that Samus was conning Mother Brain out of her cash.