Here is a story summarizing the "proper" narrative of that film: The Quest for the Perfect Burger

The duo sets out on what they expect to be a short trip. However, they soon discover their local White Castle has been replaced. This sparks a chaotic odyssey through the night. Along the way, they encounter: A group of aggressive extreme-sports punks.

After being arrested, escaping jail, and facing various bizarre characters, the pair eventually finds a White Castle restaurant. They consume a massive amount of burgers, finding the experience to be everything they hoped for.