It's wrong to date your sibling's ex.
Charlie needs a date for the upcoming dance and learns that his big brother Alex just got dumped by his ex-girlfriend Stacy.
Charlie wants to ask a girl to the dance.
Charlie asks a girl named Eve to the dance when he overhears someone saying she needs a date.
Charlie asks Stacy if she'll go to the dance with him now that she's single.
Alex lets Charlie borrow some of his cologne, so he smells good for his date with Eve.
Alex learns that Charlie asked out Stacy and punches him for the act of disloyalty.