Five Earth teens - Keith, Lance, Hunk, Pidge and Shiro - who become the last line of defense for the galaxy in an intergalactic battle against the evil alien force led by King Zarkon.
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Following on from the sacrifice of the Castle of Lions, the Paladins and their allies need to figure out a way to recharge the Lions after their battle with Lotor, and a way back to home....
As the team tries to decipher Lotor's plan for the comet, Coran gives the Paladins a history lesson about the origins of Voltron and the ongoing war.
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