Voltron: Lion Force, It'll Be a Cold Day

S1 E21: After the battle on Planet Pollux, Romelle was taken prisoner by Lotor because of her resemblance to Princess Allura. She survives terrible hardships in the slave dungeons of Planet Doom, but finally escapes, crashing on the ice planet of Neeve. Catching her distress call, Keith, Pidge, Lance, Hunk and Allura set off to rescue her. But Lotor gets there first and sets a deadly trap. Princess Allura is given the choice, surrender herself, or let Romelle and Bandor die.