Diane and Sam become lovers and they believe that working in a same place isn't good for their relationship, so Diane resigns and takes another job. But when she discovers that his new boss considers her a sex object, she quits this job and returns to Cheers. Also in this season, Diane reunites with her former blind date Andy, who plans to conduct a robbery in Cheers, as well as her former fiance Sumner who wants to gain back her from Sam. In the end of this season, Sam and Diane conflict and break up as Diane quits her job at Cheers.