Chet Ripley's plans for a quiet vacation at a lakeside resort quickly take a turn when his obnoxious brother-in-law and his snooty family appear unannounced and ready for "fun" in the sun. Unfortunately, the only thing these two in-laws have in common is their intense dislike for each other. Soon, it's brother-in-law against brother-in-law in an uproarious and hilarious fight to the finish! © 1988 Universal Studios. All Rights Reserved.