Star vs. the Forces of Evil Season 3 Episode 1 - The Battle for Mewni: Return to Mewni / The Battle for Mewni: Moon the Undaunted >Moon shares her story revolving around the death of her mother (Star's grandmother) at the hand of Toffee when she was a teenager. Moon was set to decide between signing a peace treaty or going to war against the monster army, led by Toffee. Since Toffee is immortal, Moon approaches Eclipsa, who is revealed to have been held in suspended animation inside a crystal prison for 300 years, to learn a dark magic that can destroy him. They forge a magic pact: in return for Eclipsa teaching Moon the magic, she would be set free once Toffee is defeated. She then confronts Toffee and uses the dark magic. However, she aims for his finger severing it, which he is unable to regenerate. Seeing their immortal leader wounded causes the monster army to panic and flee with Toffee following suit.