Cheers is a small bar in Boston, MA. As owner Sam Malone opens up, a couple enter the bar. Professor Sumner Sloane and his fiance Diane Chambers are to go to Barbados to be married, but Sumner's ex-wife still has the wedding ring. Sumner asks Sam to keep an eye on Diane for him whilst he goes and fetches it. Sam tries chatting up Diane but she's not interested. The other employees at Cheers arrive for work - waitress and single mom Carla Tortelli, and bartender Ernie "Coach" Pantusso, who was Sam's baseball coach back in the days when Sam was a relief pitcher for the Red Sox. As the bar gets busier and more people wonder who she is, Diane hopes Sumner will return eventually. Sumner comes back a few hours later and says he hasn't got the ring, but then his ex-wife calls and says she's got it, so he once again leaves Diane in Cheers whilst he goes to fetch it. He asks Diane to call the airport and put their flight back a bit. Once again he is gone a long time, and Diane starts to worry

Diane's teasing about his airhead women sends Sam looking for a date of a higher cerebral plane and an old customer insists he must see the former owner to discuss his personal problems.

Carla's fiery temper almost costs Sam the bar when she attacks an obnoxious Yankees fan.

Sam realizes how much he misses his former sports celebrity status when a local newscaster asks to interview him again.

Coach's daughter brings the obnoxious lout she plans to marry to meet her father.

Diane becomes upset when Sam hits on an old friend of hers who's on the rebound from an unhappy love affair.

Norm tries to make points with the boss by planning the annual office party at Cheers and arranging for Diane to be the old man's "date".

Diane and Carla decide to bury the hatchet over after work drinks, which lead to a startling confession from Carla about her youngest child.

Coach and Sam become unlikely romantic rivals for Coach's new neighbor.

Rick Walker, a friend of Sam, seeks his advice on how to end a losing streak.

While Diane keeps notes on bar conversation, a novice comes in for one final fling before entering a monastery and a World War I doughboy shows up for a very small reunion.

The bar patrons are all enthralled by the mysterious gentleman who claims to be a secret agent.

Sam lets the sexy appeal of an agent and the glamour of the public spotlight lure him into being a TV pitchman.

Diane looks to her friends for comfort when her cat dies, but finds everyone too enthralled by a Celtics game to notice.

Carla has a secret that's about to be revealed:she's five months pregnant.

Cheers' regulars fear the place may become a gay hangout after an old friend of Sam's reveals his homosexuality on TV.

Sam and Diane dare each other to find the other's perfect date, but Sam's last minute choice doesn't quite measure up.

Sam enters Diane in the "Miss Boston Barmaid" contest without telling her.

Sam enlists Harry the conman to help fleece a card shark who cheated Coach out of a lot of money.

Diane's mother turns up at Cheers with the news that Diane must marry before the next day or her mother will lose her share of Diane's father's estate.

Diane's fascination with Sam's older brother brings their long simmering relationship to a boil when the sibling asks Diane to go to Paris with him.