In this spoof of public-school educational films, young Mary Jane asks the question, "What is gravity?" After asking various (dysfunctional) family members without success, she then asks Dr. Waxman of the Karl LaFong Foundation for Gravitational Research (motto: "heads in the clouds and feet on the ground"), who explains that gravity is caused by a substance named GR12. Unfortunately, the world is running out of GR12. The cartoon character Jiminy Gravity then explains (in song) how we can conserve gravity with such practices as sitting on the floor and carrying helium balloons.
Lionel Twain has invited the five greatest detectives to a "dinner and murder." How can they resist? Included are a blind butler, a deaf-mute maid, screams, spinning rooms, secret passages, false identities, and more plot turns and twists than are decently allowed.
After avenging his family's brutal murder, Wales is pursued by a pack of soldiers. He prefers to travel alone, but ragtag outcasts are drawn to him - and Wales can't bring himself to leave them unprotected.