When a caller named Marco tells Frasier he’s having problems committing to his girlfriend, Frasier advises him to break up with her. Furious and rejected, the jilted ex-lover, Catherine, comes to the radio station to berate Frasier, but instead finds herself attracted to him.

Frasier boldly asks Catherine out on a date, and she accepts. A couple of days later, an unsuspecting Marco phones Frasier’s hot line to express his regret at having dumped Catherine, and his desire to get back together with her.

Against his professional ethics and Niles’s brotherly advice, Frasier tells Marco to forget Catherine and leave her to date others. However, when Frasier and Catherine are about to consummate their relationship, Frasier admits his guilt and breaks up with Catherine.