The quick version goes something like this:
Small town girl attends college in bigger city, meets boy (AKA “the big kid”), and falls in love. Boy takes job in even bigger city in South Florida. Girl marries him & follows, but not before taking a detour through the Walt Disney World College Program. Thing One and Thing Two join them several years later and before long the boy, the girl, and the baby twins move home to small town.
Girl now spends her time dealing with the double trouble, attempting to become a real runner, and growing a little business she dreamed up while sitting & nursing two tiny babies for hours at a time.