After learning about pollution a group of creatures called Zwibble Dibbles, decide to throw a party for the Earth to raise awareness.

At the Johnson's house in the country, a female mouse named Emily, whose existence is known to two children named Patty and Kevin living there, decides to go into the city to visit her cousin Alexander for Christmas. However, the chef the restaurant Alexander lives in has set a variety of anti-mice precautions, thus scaring the two cousins out of the restaurant. The two mice return to the country house to celebrate Christmas together.