High-school student Liz Parker finds her life irreversibly transformed when her friend Max, whom she learns is an alien, miraculously heals her otherwise fatal gunshot wound.
Liz tries to maintain her relationship with Kyle, after Max has saved her life, and she sees Ms. Topolsky snooping in Michael's file. Michael tries to find out about other aliens in Roswell when he starts seeing mysterious scenes.
Isabel worries when Maria gets nervous around Sheriff Valenti, so Isabel enters Maria's dreams to see if she is trustworthy with their secret.
Liz's Grandmother has a stroke. Max consoles her.
Liz can't find her journal that contains all she knows about the aliens! She fears it has fallen into the wrong hands.
Michael discovers some new information when his art teacher reveals information about the geodesic dome. The dome continues to invade his dreams and it forces him to hijack a car all the way to Texas.
Liz and Max go to an American Indian Resveration, to talk to an elder about the alien who disappeared in 1959.
Max gets in a car wreck, Liz pressures Alex to give blood samples for Max, to protect Max's secret.
Hotter temperatures incite some winter romance between Michael and Maria, Liz feels even more for Max, and Isabel enters one of Alex's dreams, but finds that she's already there.
Still at the reservation, Michael violently hallucinates, his friends must work to save his life.
Max uses his special powers to save his mother from a fire. Meanwhile, Liz tries to be friends with Kyle.
Another UFO is sighted near the town. Max and Isabel use a school camping trip to investigate.
Max hosts Jonathan Frakes at the annual UFO Convention. They have to avoid the couple that saw Max save Liz's life at the Crashdown Cafe.
Max and Kyle bond over their feelings for Liz. Michael and Isabel send a signal to the fourth alien.
Max and Isabel's father helps Michael with emancipation after a violent showdown with his father, while a fourth alien comes forth as a shape-shifter.
Max makes his way to another alien artifact as result of Liz induced visions.
Ms. Topolsky tips Liz off that an FBI alien-hunter is coming after Max and his friends. Also, Isabel befriends Tess, Max and Michael are immediately suspicious.
Max is suddenly smitten with Tess. Sheriff Valenti learns that Topolsky was killed in a fire. Someone has placed a video camera inside Michael's apartment.
Sheriff Valenti tells Max that his safety depends on the information he provides. Michael and Isabel realize they are not siblings, and starting having dreams of each other.
Tess's book says that she and Max are meant to mate, so are Isabel and Michael, who may be pregnant. Nasedo disguises himself as Max and kidnaps Liz.
Agent Pierce interrogates Max, who telepathically connects with Isabel, giving her clues about where he is. She sets out with Michael and Tess to rescue him.
The aliens escape from Pierce and Save Nasedo. Michael accidentally kills Pierce, Nasedo takes his place to help the Aliens. They find a message from Max and Isabel's real mother, who gives them some jaw-dropping information.