The winter holidays have arrived but no one's plans are going according to plan. As Dylan prepares to go to Baja for Christmas, a mysterious woman, named Suzanne, and her 11-year-old daughter, named Erica turn up on his doorstep, claiming to have a connection to the McKay lineage. Meanwhile, the Walsh family plans a Hawaiian holiday, but end up stranded in the airborne plane. Steve dresses up as Santa for disadvantaged children. Frustrated that Donna won't give up her virginity, David starts to act coldly towards her during a Christmas party at Mel's house. Also, Jesse takes Andrea to a midnight mass.