Lance is being held at Bastille-12 prison for trying to save Red Lion. The rest of Voltron Force sets out to save him while Lotor attacks Arus. Allura learns key mysteries about the Robot Lions.
Zarkon sets up a challenge match between Lotor and Lance. The fight is nothing but a diversion though, a ruse for Zarkon to power up a special Proton Cannon from an alternate world.
The Black Draco, a dragon from another dimension, steals Yellow Lion's Lair. Voltron Force pursues through a portal to the dragon's world. Upon entering, their lions transform into Stealth Lions.
Allura learns that the Robot Lions are made of the "spirit" of real Lions who once lived on Arus and have sworn to protect it. Calling on the spirit of the Lions, the Voltron Force makes one last stand against Lotor.
The Voltron Force learns to use telepathy to control their lions. Pidge, not being any good at mental telepathy, resists and is captured by Zarkon and Lotor. The Voltron Force must use their new powers to save Pidge.
