This teen comedy is centered on a sarcastic high school senior, Wren whose mother insists that she watch her 12-year-old little brother, Albert, on Halloween night, so mom can go to a party with her much younger boyfriend. When Wren brings Albert along to the wild high school party of he year, Albert disappears into a sea of trick-or-treaters. Frantic to locate him before their mother discovers he's missing, Wren enlists the help of her sassy best friend April, as well as Peng, an aspiring ladies man and co-captain of the debate team, and Peng's best friend, Roosevelt, a sweet nerd whose crush on Wren clouds his better judgment. This unlikely foursome embarks on a high-stakes, all-night adventure to find Albert, crossing paths with outrageous characters every step of the way.