Adventures happen a long way off to other people, right? Home is safe and boring, right? WRONG at least when the Double Cousins are around. When Carly and Molly come to Rapid City, South Dakota, to visit Maxs family they expect fun, not the most dangerous adventure yet! Shortly after arriving, Mr. Crosbythe much loved owner of the corner storeshares a story that leaves Max and Carly wondering if they can find out what happened to Mr. Crosbys nephew, Lee, in the Flood of 72. But then a crisis intervenes and they drop everything to help Mr. Crosby save his store. Some of Mr. Crosbys oldest friends, a newcomer to town, and their church friends all pitch in, but is it enough? Can they save the store? What will Mr. Crosby do if they cant? And the old cash registerMr. Crosby believes its the key to everything. Only teamwork and faith will save the store, solve the mystery of Lee Crosbyand see the cousins and Mr. Crosby safely through the most dangerous situation theyve ever faced. In the process they learn valuable lessons about community, teamwork, and the value of recording history.