Uncle Arthur's new flame, Aretha, is not happy about his practical jokes. To please her, his practical jokes are installed in the Stephens' home where all hell breaks loose. Samantha tells Arthur that Aretha isn't worth putting her and Darrin through a lot of trouble and he puts their house back to normal.

Endora says that Darrin is pig-headed and proves that by blinking a pig's head on his body! This is a catastophe for Darrin, but turns out to be a great ad campaign for his new client.

Darrin learns that Serena is not to be messed with when she turns him into an ape.

Endora claims that Darrin has no sense of humor, so she puts a spell on him, turning him into a comedian. His client, Mr. Jameson, does not like Darrin's new Def Comedy Jam phase when he gets a migrane headache. Darrin discovers that Endora has hexed him, and she gives him another spell- this time, making jokes of anything sad or discouraging. The Jamesons come by and at th very mention of Jamison's wife's bursitis, Darrin starts laughing. Thinking that Darrin's insensitivity will cost Larry and him the account, the Jamesons think otherwise and give McMann and Tate the account.