A French salvage ship searching for a lost WWII fighter plane unknowingly surfaces an alien which appears in the form of black oil and has the ability to jump hosts. Mulder heads to Hong Kong to investigate the salvage broker who sold the information to the French and he encounters Krycek, who has been selling information from the MJ documents. As Mulder prepares to take Krycek back to the US, the alien makes its way to Hong Kong and takes control of Krycek.
Carl issues an ultimatum concerning Eddie's drinking. Meanwhile, female fans become intoxicated with Stefan Urquelle.
Eric's devotion to the TV station soon sees his grades taking a plummet, and it jeaprodizes his chance at graduation.
Greg thinks there is something wrong with the old camera he and his friends found. The photographs keep turning out wrong. Very wrong. Like the snapshot Greg took of his father's new car that shows it totalled. And then Greg's father is in a nasty wreck. But Greg's friends don't believe him. Shari even makes Greg bring the camera to her birthday party and take her picture. Only Shari's not in the photograph when it develops. Is Shari about to be taken out of the picture permanently? Who is going to take the next fall for...the evil camera?
Space Ghost is fed up with Moltar and Zorak, and decides to replace them with his super computer named Mo 2000.
What kind of person finds $10,000,000 in their bank account...and gives it away. Chance meets Angie's long lost son, a member in a rock and roll band and first seen in jail.
Amanda's cousin falls to his death when his motorcycle suddenly veers off the road. Amanda leads the investigation when it's discovered her cousin was drugged immediately before the accident.
Three youths, who were brought from Rwanda to act as mob hit men, are befriended by Father Torres. Moreno gets an inheritance; Williams disagrees with the methods of his son's hockey coach.
Humans turning into panthers (or panthers turning into humans), poachers, and Elisa's mother await the company as they arrive in Nigeria.
Martin finds a bigger and better apartment for half the price they're paying now. So he decides to sublet his old place to a young couple, and move into the new place. But then the deal on the new place falls through, and it's too late to move back. Martin and Gina end up in the street! So they devise a scheme to scare off the new tennants. Tommy, Pam and Cole masquerade as dangerous criminals. The plan works nicely, and Martin gets his old crib back.
Benton decides to blow the whistle on Vucelich's unethical study methods, causing Vucelich to drop him from the study. Susan treats a street couple, one of whom has passed HIV to the other. Doug receives a visit from his estranged father. Carter spreads rumors about an affair between Mark and Susan. Mark buys a motorcycle. Prostitute Loretta has cervical cancer.
A TV sitcom, Buds, turns out to be less friendly than the producer hoped.
Joey buys a big screen TV and two leather recliners with his newfound money. Monica has a catering job for one of her parents' friends and becomes infatuated. Ross and Rachel attempt to have their first real date, but Rachel laughs every time they kiss. When they try again the next evening, they are interrupted when Ross is called into the museum.
George has a meeting with Marisa Tomei; the Cadillac Jerry buys his father sparks trouble for his dad.
George becomes obsessed with Marisa Tomei after he's told he's her type; Jerry gives his father a Cadillac.
Billy and the young Rangers attempt to free the Alien Rangers from a toxic lake.
Billy and the young Rangers devise a scheme to outsmart the monsters.
Drew may have to terminate his affair with Lisa or risk job termination when the store bans interoffice dating. His solution? Ask Kate's boyfriend to pretend he's dating Lisa, to throw co-workers off the track.
A subway station gas attack, similar to one that took place in a Baltimore church five years earlier, brings Baltimore detectives Tim Bayliss and Frank Pembleton to New York to assist Briscoe and Curtis. This crossover continues on Homicide: Life on the Street S04E12 For God and Country (II).