While on a road trip through the desert, Charlie and her boyfriend Aidan break down in the middle of nowhere. While Aidan waits for a tow truck, Charlie heads to a nearby diner to find help. When Aidan goes missing, Charlie finds herself stranded in a strange town unsure who to trust. The only thing she knows is she might just be their only chance to get out alive.

In order to lighten up her uptight family, the free-spirited daughter of a conservative politician brings weed-infused salad dressing to their Christmas Eve dinner. Chaos ensues when everyone gets unknowingly high, revealing the family's innermost secrets.