Diane feels depressed and left out of the gang's activities so Frasier organizes a day just for her-at the opera.

Frasier and Lilith invite Sam and Diane over for dinner to celebrate their first week of cohabitation. But things start going wrong when Lilith finds out Frasier and Diane were engaged, and she locks herself in the bathroom. Then Sam and Diane have an argument as well. Meanwhile Cliff agrees to babysit Carla's kids.

The gang tries to reassure a nervous Mr. and Mrs. Boyd back in Indiana that Woody is fine and has wonderful friends in Boston by making a home movie of an average day at Cheers.