Hoping to land a role on hit show Tropical Hospital, Harriet stages her new musical but must contend with Joan's creative meddling.

When a fire threatens to shut down the Grassy Knoll, a desperate Abe spearheads a campaign to rebuild the town's beloved greasy diner and save Joan.

After the clones find themselves stranded in the desert, JFK experiences a heat-induced intellectual breakthrough, Abe faces a zombie horde, and Scudworth and Mr. B hit the big-time in Vegas.