The film tells the story of a bachelor who babysits his brother's rebellious teenage daughter and her younger brother and sister while the parents are away.

When Cindy and her husband, Bob, have to leave town for a family emergency, there is only one person available to babysit for their three kids: Bob's lazy, carefree brother, Buck.

While he immediately gets along with the two younger children, Buck must change his bachelor lifestyle if he wants to be a responsible caregiver for the angst-filled teenager, Tia.