When Christa's father loses his job and her parents decide to sell their summer cabin, she comes up with a plan to save it. With the help of her friend Alex, she sets out to find Al Capone's money rumored to be hidden somewhere in Whitefish.
In Wisconsin, ten-year-old Christa and eleven-year-old Alex team up to search for the lost treasure of Al Capone near where Alex has just moved into his grandfather's house and Christa is spending what may be her family's last summer in their cabin.
