All the couples are back for a wedding in Las Vegas, but plans for a romantic weekend go awry when their various misadventures get them into some compromising situations that threaten to derail the big event.

Chelios faces a Chinese mobster who has stolen his nearly indestructible heart and replaced it with a battery-powered ticker that requires regular jolts of electricity to keep working.

Hard-nosed talk radio personality Sarah Williams receives an on-air call from a man claiming that a murder will occur by the end of her late-night shift. It’s up to Sarah to figure out who this is and why he’s doing it… before it’s too late.