Max and Liz hold up a convenience store, which is directly above a secret underground facility which is housing the alien's ship.
Liz and Max secretly meet up with each other despite her father's wishes; Meanwhile, Michael gets a job in security at a local pharmaceutical company.
Max head to Los Angeles in search of a second shape-shifter.
The Shape-shifter takes Max to the spacecraft, where Max discovers a key that he can use to contact his son.
A visitor from their hometown arrives to attend Isabelle's wedding.
-- Digging Your Scene, Ivy
-- Edge of the Ocean, Alana Davis
-- God of Love
A couple of surprise guests (Max and Michael) interrupt Isabelle's honeymoon.
-- Edge of the Ocean
A visit from an old friend makes Maria realize how much she is giving up to befriend the aliens.
Max believes that his son is trying to contract him through an autisitc child that runs up to him at the mall.
-- Christmas Day, Tori Amos
-- Have Yourself a Merry Little Christmas
On New Year's eve everyone ends up with everyone else's significant other: Liz with Michael at the diner, Isabele and Kyle at a Fraternity Party, and Max and Maria in search of the Enigma.
Isabelle thinks about how her life resembles a 60's tv sitcom from time to time.
Liz thinks that she is experiencing some side-effects from Max healing her. Maria gets a chance to pursue her dream of singing.
Maria has a disapointing experience at her first recording session, while Liz settles in at boarding school 2,000 miles away.
Jesse finds out the kid's secret.
Songs: Bob Marley
-- Chant Down Babylon, Sense Field -- Save Yourself
Since Max died, Michael thinks that be is inheriting the crown.
Another UFO crashes in Roswell.
Tess' arrival in Roswell creates chaos for everyone, with Liz wanting to hand her over to the FBI and Max demanding answers. Meanwhile, the parents discover the truth about their children.
As Graduation approaches the kids realize that the time to leave Roswell has finally come.
-- Shining Light