Struggling to cope with his erratic temper, novelty toilet plunger salesman Barry Egan spends his days collecting frequent-flyer-mile coupons and dodging the insults of his seven sisters. The promise of a new life emerges when Barry inadvertently attracts the affections of a mysterious woman named Lena. But their budding relationship is threatened when he falls prey to the swindling operator of a phone sex line and her deranged boss.