When Gary uses all of his brother Taylor’s special string from his box, to complete his final school project of the year, it leads to recrimination from his younger brother and a promise that the summer vacation wouldn’t be a happy one.Knowing that he will have to retrieve the precious string if he is to have anything like a fun summer, Gary determines to track down his teacher, Mr. Pushintol. But there’s a problem. Mr. Pushintol has moved away, to Wisconsin. And Gary lives in Florida.Undeterred, the plucky kid sets off on an adventure to recover the string for his younger sibling, embarking on a momentous journey of a lifetime where he will encounter danger and new experiences as he travels by bus and boat towards his ultimate goal.And all the while Gary’s dad and brother are hot on his heels, assisted by the Secret Detective Agency. But will they catch up with him before he gets to Wisconsin? Or is Gary more resourceful than his family had ever imagined?