Cortex is the large computer which rules the planet of the machines.
Cortex takes over the Odyssey's central computer, causing the ship
to land on the planet. He captures Ulysses and the children and starts
to dismantle the Odyssey. Cortex's masters are the gods of Olympus
and so he tries to entice Ulysses into his circuits, knowing it to be
a trap, but Ulysses is warned not to enter by Nanette, a robot
befriended by No-No.
With robots swarming over the Odyssey, dismantling every component,
Ulysses has to race against time to find a way to deactivate Cortex.
The hero, however, is No-No, who locates Cortex's central processor
and takes it out of commission just in time to save the Odyssey and
the lives of Ulysses and the children.