After Cory and Topanga suffer an embarrassing "Fiancee Game" defeat to Eric and Rachel, Topanga decides she and Cory must live together to get closer as a couple.
Meanwhile, Shawn has trouble coping with the loss of Chet; and Jack and Rachel get closer as Jack grieves not having gotten to know his real father.
Cory invites Shawn to stay with him for Christmas. Topanga, who is staying with Cory as well, invites Angela, not knowing that Shawn will be present.
Meanwhile, Eric gets a job as a mall Santa and finds joy in making a difference.