The Dreamstone (1990)

S2E10 Sport's Day

In anticipation of the yearly Noop Sports Day, Rufus decides to create a cake shaped like The Dreamstone. Unfortunately, he makes a mistake and ruins his creation. To buy himself time for another attempt, he puts the actual Dreamstone on show. However, this risky move exposes The Dreamstone to the lurking Urpneys, who are eager to seize the opportunity.