Air date: 9/28/79

When Arnold goes to the hospital to have his appendix removed, Mr. Drummond is surprised by the bigotry of a potential business associate, whose daughter Alice has befriended Arnold.

Arnold's Girlfriend – Part 2

Air date: 9/28/79

When Arnold and his new friend Alice discover they can't share a hospital room together, they run away to the Drummond's penthouse the night before Arnold's surgery.

Feudin' and Fussin'

Air date: 10/26/79

The cast of TV's “Hello Larry” returns when Larry gets a chance to host a television talk show in New York. When his special guest suddenly becomes unavailable, Larry's tryout as a talk-show host seems doomed until he finds a new interview subject: Arnold.

Mrs. Garrett's Romance

Air date: 11/7/79

After a romantic date with a man she met at night school, Mrs. Garrett is shocked when he proposes marriage.

Birds and Bees

Air date: 11/14/79

Arnold notices that a new neighbor is pregnant and he starts asking questions, so big brother Willis gives him his own version of the facts of life.

Arnold's Hero

Air date: 11/21/79

When a meeting arranged by Mr. Drummond between Arnold and his idol falls through, Willis and Kimberly devise a scheme to guarantee that Arnold will still get to meet The Champ.

The Adoption – Part 1

Air date: 12/5/79

Arnold and Willis are going to be officially adopted by Mr. Drummond, but the visit of a junkyard dealer posing as a relative leaves their plan in jeopardy.

The Adoption – Part 2

Air date: 12/5/79

Arnold and Willis plan to move away from the Drummond household until their research uncovers the truth about their supposed “relative”.