The families escape to a mountain cabin in search of "the perfect Christmas". Things get a little crazy when Tommy and Chuckie lay traps for Santa and Chuckie's dad dresses up as Santa and tries to squeeze his way down the chimney.
While Stu shows boring slides of his family's vacation, the rugrats draw their own "slides" which come alive as they narrate their own "day in the life" stories.
Didi meets the world famous child care expert, Dr. Lipschitz, at a book signing and promptly invites him home for dinner.The rugrats fantasize about what it would be like to be adults.
Tommy and Chuckie think a visiting relative is actually an evil alien. Chuckie swallows a watermelon seed, his friends shrink themselves to get it out.
When Susie's teenage sister Alisa baby-sits Susie and Tommy for the first time, Tommy and Susie suspect there are monsters loose in the house.Grandpa tells Angelica and Tommy about Stu and Drew's babyhood.
Grandpa competes in a bowling tournament against an old rival.; Angelica runs away and goes to Tommy's house after she gets into an argument with her father.
Angelica sneaks a set of toy handcuffs and then gets stuck cuffed to Chuckie. / The Rugrats go off on a backyard fantasy adventure to find the North Pole and get Santa to fix Chuckie's fire truck.