The arrival by sea of a large crate destined for Robin Masters leads Magnum into a bizarre situation involving a wealthy Japanese businessman, his errant daughter and a fortune in pearls.
A dolphin is abducted, and Rick and AJ have to find him and bring him back before his mate starves herself to death.
In this episode, we learn that Alex can be a compulsive gambler. Alex even scares Louie off with his compulsion, but Jim talks some sense into Alex at the end (after having bankrolled him initially).
Howard and Marion come to Chicago to visit Joanie at her apartment after Chachi answers Howard's phone call late the night before. When they arrive, Chachi is there wearing Joanie's bathrobe and shower cap.
The stories of the students and faculty of the New York City High School for the Performing Arts.
Jake, posing as a defecting U.S. scientist, and Sarah search for an experimental German bomb and a famed black pearl.
In her determination to start a new life with her husband Richard's business rival Vincent, Theo flees to Paris with Vincent. But bad news follows quickly - Richard's business has collapsed. Theo returns to find that Richard has been less than honest with her, and that more than his job is at stake.
The Harts witness a murder when the spiritual mentor and bridegroom of Jennifer's aunt meets an untimely death.
Joanie and Chachi come back to Milwaukee after spending the summer in Chicago. Joanie wants to move there to be with Chachi and to continue their music career. After telling Howard and Marion her plans, which include attending Northwestern University, Howard refuses to let her go.
Smiley continues his investigation, now looking for a man named Otto in a small fishing community, only to find his decaying body in his boat, and a mysterious chalk mark he's seen before. Smiley talks to the now-perpetually afraid woman.
When Tom gets his pants back from Jefferson Cleaners with a stain on them, he wants a refund however George refuses to pay for the pants, charging it was Tom's fault for leaving a candy bar in the pocket. This leads them to take their case to a TV court show.
Ponch and his new partner, Bobby, get off to a rocky start, but when a baby is abandoned, they're determined to work as a team.
Harriet finds a bearer bond from Walnut Grove. She uses this to try to get people to follow her suggestions. She tells the town council that if she doesn't get her way, she will cash in the bond which would force the town to pay Mrs. Oleson over $10,000.
Pac-Man and family go to the Pac-Land World Series of baseball. But the Ghost Monsters chomp out both the teams and wind up competing with the Pac-Family in a not-so friendly game in which the monsters pull out every dirty trick up their sleeves to win. Can the Pac-Family overcome the cheating and save the game?
Willis is completely supportive of Kimberly's transfer into his public school, until his sister's ""innocent"" actions begin getting him into hot water.
A magic show provides a great diversion for two crook who intend on robbing the bank, and Yabba and Scrappy catch on.