Voltron: Defender of the Universe: The Complete Series
Voltron: Vehicle Force, Wolo's Lost World
S1 E84:
The forests of a dead world reminds Wolo of his childhood, growing up with his brother on a faraway planet. As he remembers when his brother was seriously hurt saving his life, an earthquake puts him in immediate danger. Without his brother to help him, Wolo must act on his own to save himself, and the entire Voltron Force.