Lucy and her son Jerry arrive in LA (her daughter has gone to bording school, and Vivian has gotten married, it is explained), where, coincidentally, Mr. Mooney has also relocated to. Lucy coerces Mr. Mooney into taking her and Jerry to Marine Land, where Lucy ultimately ends up in the pool with the dolphins.

Lucy babysits a neighbor's horse.

Mr. Mooney instructs Lucy to deliver some documents to Danny Thomas, and through a series of misunderstandings, she ends up performing in his musical act.

Lucy Carmichael's 1st Christmas in California. Part 1 has Lucy expressing determination not to spend too much on presents & Christmas tree in a typical tete a tete with a dubious Mr. Mooney. She succeeds in mixing up all of Mr. Mooney's gift tags for his wrapped Christmas presents. Part 2 takes place as Lucy shops for a Christmas tree withe the scene ending with Lucy knocking lots of the inventory over with her new large tree. Part 3 has her recruit Mr. Mooney to sing bass with the children's choir at a charity event at the bank.

Lucy is set up on a date with Dean Martin's stunt double. When the double can't make it, Dean himself substitutes on the date. During the date Lucy keeps telling him how bad it is that Dean Martin is stealing all of his glory.

Federal agent Stack discovers that Lucy is a dead ringer for gangster Gordon's moll and gets her to go undercover in order to recover missing bank robbery loot. This episode was a spoof of the classic crime drama The Untouchables which was produced and filmed at Desilu Studios.