The Doctor escapes from the Scope and joins forces with Vorg to try and save its inhabitants but Kalik is still determined to use the Drashigs to start a rebellion.
Sam Hibbing, a major Syndicate drug dealer, stole three tons of amphetamines from a chemical plant and hit the stash in a secret location - the IMF must get it before he sells it. The IMF replaces Hibbert's drug-addicted daughter Margaret with Casey and her new friend Jim, who turns out to own a charter plane and served time for murder. Meanwhile Barney teams up with Hibbing's buyer Dayton to purchase the drugs but they must have them the next day - Jim sets it up so Hibbing's regular courier gave drugs to Margaret/Casey, leaving Hibbing with no other choice then to use Jim as the delivery man. Hibbing sees through Casey's disguise and she escapes, but Hibbing tries to stop Jim - Barney and Willy stop him and Margaret goes into rehab.
Lamont breaks the news to Fred that he plans to join the crew of a tramp steamer and sail around the world. A shocked Fred gets another shock, Lamont plans on putting him in a retirement home.
Felix becomes lawyer to himself and Oscar after they get charged with ticket scalping.
After the death of a mining camp's feline mascot, Caine and a miner embark on a trek to find a new cat -- a journey that ultimately has the pair trapped at the bottom of a rapidly filling well.
Stone discovers that a murdered woman was involved with both a famous newspaper reporter and his son.
An old friend of Ed's goes missing after promising to take him on a fishing trip, and it soon becomes clear that he has become involved in a Mob killing. Ed is determined to prove his friend's innocence, but the evidence soon mounts up; and Ed finds himself having to argue against even the Chief in order to show that his friend is not a killer.
Matt runs into his former mentor Adam Kimbro and decides to build his self-confidence by deputizing him as a Deputy Marshal.
Lucy Carter, a widow with two teen children, takes a job as a secretary for her stuffy brother-in-law.
A daring plan is crafted by a convict's wife to release a prisoner from incarceration: an innocent and helpless police officer, who is undergoing surgery, is taken hostage. The rest of the medical staff in the operating room is also put at risk, including Mike Danko's wife, Jill.
It is not that Sid and Jean are actually spying, but when they do happen to notice something going on next door, they can't ignore it, can they?
Leonard Nimoy plays a heart surgeon whose talents turn to murder. Stung by jealousy, he's planning a surgical death for his brilliant but ailing associate. Will Geer plays the intended victim.
Tim is off to spend the weekend at Tally-Ho Towers with his rich Great Uncle Butcher-Fitzsimmons. He is dressed as a Guardsman in the hope that this will impress the old man into leaving him all his money in his will. Bill and Graeme think this is despicable, disgusting - and a very good idea, so they invite themselves along.
The crew of Los Angeles County Fire Department Station 51, particularly the paramedic team, and Rampart Hospital respond to emergencies in their operating area.
Bob and Emily try to decide if they should give up their apartment and buy a house.
The Doctor and Jo return to the Bernice to try and aid their escape but find themselves pursued by the Drashigs.