Stephanie's boss leaves his Ferrari on the Clements' driveway while he's away on a trip. When Andrew gets grounded, Kirk convinces him to sneak off to a party in the Ferrari, which leads him into a whole mess of trouble.
Dr. J uses hypnosis to make Stephanie more impulsive. Consequently, Andrew and Kirk are also affected by the hypnotism and begin to act like one another.
Andrew falls madly in love with Dusty, a girl that Dr. J has connections with. However, Andrew is appalled when he learns that Dusty is moving to Chile.
Andrew befriends a boy named David who has an inoperable brain tumor, and is set to die in less than a year. Dr. J makes arrangements for David to fly in an F-14, but David instead chooses to watch Andrew's windsurfing race.
On his way to work, Andrew runs into a tree and faints. He awakens to find himself in the year 1969, and befriends a hippie named Robbie, who is protesting against certain chemicals. After helping Robbie, Andrew "wakes up" in the present, and realizes that the hippie he met was actually his father.
Due to unusual circumstances, Andrew lands himself a role in the school fashion show. However, when a photographer catches him changing in his underwear, the picture that circulates leads Andrew to a world of fame, fortune and an uncomfortable job.
Andrew agrees to housesit for Stephanie's friend Lisa, and is given the opportunity to live in her apartment. However, when Andrew entrusts Kirk with a spare key, the place turns into a party zone.
Andrew and Kirk get jobs as counselors at Dr. J's new helpline for teenagers. Andrew finds himself unable to help a troubled boy with an abusive father, while Kirk befriends a handicapped girl whose father is overprotective.
Dr. J skips out on his own surprise birthday party to test out his new vertigo machine. Through this machine, he is visited by the ghosts of birthdays past, present and future, much like Ebenezer Scrooge in "A Christmas Carol".
Andrew and Kirk start their own pirate radio station. After the boys receive a warning from the government, Dr. J uses their radio station to send out an important message.
Andrew is pulled out of detention by Dr. J, who has rendered himself invisible and needs Andrew's help in getting the antidote. After making himself invisible a second time, Dr. J's antics lead to Andrew getting expelled. To make things worse, a frightened Mrs. Schellenbach spills the antidote before Dr. J can drink it.
When Dr. J's self-absorbed brother Hartley comes to Briarwood, the two of them find themselves working together when Hartley's latest discovery is stolen.
The Clements, Dr. J and Kirk go up to the family cottage so that they can tidy the place up for its new owners. However, an avalanche soon leaves everyone trapped inside the cottage, to the point where it seems that only Andrew's powers can save them.
A glitch in Dr. J's memory retrieval machine causes Andrew to suffer from amnesia. Dr. J does what he can to remind Andrew of his family, friends and super powers.
Andrew volunteers for the Slave for a Day auction, when he is sold to a man who asks him to date his daughter without her knowledge. Meanwhile, Mrs. Schellenbach purchases Dr. J so that he can serve as her dance partner.
Andrew discovers that Kirk is dating his old girlfriend and accidentally creates a stir between two of them. Meanwhile, Erin sets Dr. J up on a date with his old colleague.
