Sam's old wolf-hound in crime, sportscaster Dave Richards, announces that he is now single and once again on the market. As a reflex, Sam goes off with him until he sees Diane and remembers that he is now in a relationship. Dave is surprised at their relationship, and vows that they will no longer be an item within 24-hours. Sam and Diane are incredulous but nervous as to that statement as they know Dave will do whatever he needs to do to make his plan come true. Things start off bad when Diane finds out that Sam still has his little black book, to worse when Dave drops off a date - Didi - for Sam. Thinking that Dave might actually be right, Sam goes off with Didi. The next morning, Diane is sorry that she overreacted to Sam's little black book, until she hears Sam's news. Unlike Diane, Sam is elated by his news which does include the fact that just before he and Didi were ready to do the deed, he stopped and realized that Diane was indeed the one woman for him. Unconvinced, Diane is still angry at him. Then Dave walks in, just before the end of the 24-hours. It isn't until Sam confesses to Dave that Diane truly believes and forgives him.