After a high school lab experiment goes horribly wrong, Mordecai and Rigby must go back in time to battle an evil volleyball coach in order to save the universe — and their friendship.

• Cartoon Network Studios
• J.G. Quintel
• William Salyers
• Sam Marin
• Mark Hamill
• Minty Lewis
• Jason Mantzoukas
• David Koechner
• Roger Craig Smith