Fraggle Rock (1983)

S3E4 The Grapes Of Generosity

Gobo discovers the fabled "Grapes of Generosity," magical fruits said to inspire anyone who consumes them to share. However, when he returns home, he succumbs to temptation and eats them all himself. Soon, Gobo becomes weightless and attempts to conceal his predicament from his friends. When he learns that Red has scaled the peak of the Great Hall, he realizes he must rescue her and confront his own greed, ultimately confessing to his friends how his selfishness led to his unusual situation.