Nemesis Crisis is the fifth stage of Metal Black.
The wormhole takes the Black Fly closer to Jupiter's orbit where the players enter an asteroid close to Callisto, one of Jupiter's moons. As the player enters the asteroid, it is revealed that the asteroid is actually a hive of alien organisms. After escaping of the hive, the asteroid drifts dangerously close to the Great Red Spot where the boss battle ensues.
The boss of this stage is Ghost.