Liz Parker learns Max Evans' out-of-this-world secret when he saves her life and must rely on her to safeguard his secret as an orphaned extraterrestrial.

Liz's grandmother is rushed to the hospital after suffering a stroke prompting Liz to reach out to Max for comfort.

A freak December heat wave hits the town and sparks romance as Michael's relationship with Maria heats up and Liz's infatuation with Max intensifies; meanwhile Isabel enters into one of Alex's dreams only to discover her likeness already there and dancing with Alex.

A new UFO sighting sends suspicion and fear through the town and leads Max and Isabel to investigate the incident during a school camping trip.

Liz is unnerved by her strong desire for Max and the visions that come when they kiss - visions that lead to a glowing orb in the desert.

An older Max travels from the future (2014 to be exact) to tell Liz that their relationship will imperil his planet and together they devise a plan to change the future: by making present Max fall out of love with Liz.

The sudden death of a close friend shocks the group.

Max and Liz are arrested and jailed for holding up a convenience store. Meanwhile, Isabel has a secret affair with a handsome attorney, and Michael tries to straighten out his life.

Michael works as a security guard, but when he tries to loosen up his co-workers, he causes more harm than good. Meanwhile, Max and Liz continue to see each other despite her parents' wishes.

With Alex's ghost as her guide, Isabel must finally confront her fears about love and her conflicted feelings for Jesse. Meanwhile, Maria happily discovers a whole new, human part of Michael in, of all places, a bowling alley, and Liz and Max struggle to remain together despite her father's insistent disapproval.

Right before her wedding, Isabel is torn with doubt when she has erotic dreams of her former alien lover, Kivar. Meanwhile, a reluctant Max agrees to serve as Jesse's best man, while attempting to investigate him at the bachelor party.

After their idyllic wedding, Isabel and Jesse are stalked on their honeymoon by her alien lover Kivar who plots to take her back to their home planet. Learning of this, Max and Michael arrive intent on destroying the alien. Meanwhile, Liz and Maria discover that Philip has begun a secret investigation of Max, including the diappearance of Tess, and he's embroiling Liz's dad into the whole thing.

In an attempt to find Roswell's legendary New Year's Rave, Max and Maria join forces. Meanwhile, Liz connects with her father and Isabel helps Kyle find the perfect date for New Year's.

When a journalist friend of Jesse's comes to Roswell, Isabel discovers he's investigating her, Max and Michael, after he witnesses Michael using his powers. Meanwhile, Isabel fantasizes about what her life would be like if Jesse knew her alien secret through the device of a 1960s sitcom a la "Bewitched."

When Liz begins to undergo some strange, alien-like changes to her body, she decides she needs to get as far from Max as she can. In order to separate from him she must leave Roswell to go to boarding school in Vermont. Meanwhile, Maria gets offered a recording contract in New York, but she isn't sure she likes what the record label people are doing to her music to make it "popular."

When the gang attempts to return to their normal lives, they soon find that their lives have gotten a lot more complicated, which includes Jesse attempting to come to terms with his newfound knowledge but matters are complicated when he finds himself under FBI scrutiny, and Max's "death" creates a unique situation within the alien authority structure, resulting in a new King...Michael.

Michael witnesses a fatal crash between a fighter jet and an alien vessel, and embarks on his own investigation leading to the recovery of an artifact. Meanwhile, Isabel spends the day with her mother, who's harboring a secret agenda and is working with her husband to discover Max & Isabel's secret, which leads to a shocking revelation.

As their high school graduation approaches, the gang must come to terms with their expectations for the future, while joining together to thwart the FBI when they discover that several members of the group are under surveillance. Meanwhile, Liz begins exhibiting even more alien-like powers, that cause her to see visions of their future - including their deaths.