Alastair Rodent, a common house mouse, has always been proud to be part of the silent mouse majority. However, in an effort to please the beautiful Mattie McMice, Alastair inadvertently volunteers to be the coordinator of the holiday party for Mouse Lodge 358. Despite numerous obstacles and attempted sabotage, family and friends come together to help Alastair put together the social event of the year: Alastair's Holiday Party.