The evil warlord Lotor has escaped from prison. Although the Voltron Force is forbidden to pursue him by Amalgamus, Lance defies orders and takes Red Lion to pursue Lotor himself.
Did You Know?
Coran says that both Zarkon and Lotor were responsible for the attack on Lance's home, though Lotor always attacked abroad while one of Zarkon's generals such as Yurak led the forces, until Lotor himself became the head of command in the original series, so Zarkon himself never directly fought. See more
We'd go to the ends of the universe for you, Princess.