After the break-up in the finale of season 2, Sam has been drinking and womanizing for months. Meanwhile, Diane suffers a nervous breakdown within a few months and has to go to a sanitarium called Goldenbrook, where she meets and develop a relationship with the psychiatrist Frasier Crane. Later, Diane returns to work at Cheers under the strong request of Coach, and her romance with Sam seems to rekindle. Frasier proposes to Diane and asks her to go to Italy with him, and Diane gives Sam the last chance before she makes up her mind.