Frank Benson (Bob Hope) and his wife, Elaine (Jane Wyman), decide to end their marriage after 20 years. Their daughter, Nancy (Joanna Cameron), announces she wishes to marry her college sweetheart, David Poe (Tim Matheson). David's father, Oliver (Jackie Gleason), is against the union and tries to sabotage the relationship. Nancy ends up pregnant and puts the baby up for adoption. Frank and Elaine become the foster parents to their grandchild. Frank poses as the young couple's guru to get them to raise the child themselves. Leslie Nielsen plays Phil, a divorced man who dates Elaine, while Frank takes up with Lois (Maureen Arthur). Comedy ensues when, at Oliver's urging, Frank and Elaine join the rock group the Comfortable Chair. Another sequence has a chimpanzee beating a frustrated Frank easily in a game of golf.