Mother’s Day is approaching and Peppermint Patty is reminded that she was not brought up by a mother. Her friend Marcie shows Peppermint Patty that there are many types of families. Meanwhile, Snoopy and Woodstock set out on a quest to find Woodstock's mother, Linus and Lucy set out to make the perfect Mother's Day gift, and Charlie Brown's attempt to make a Mother's Day breakfast ends in disaster.