The heat is unbearable under the Arbuckle roof. In fact it's unbearable everywhere. The only person seemingly happy with the heatwave is Mr. Allwork, whose sales in air conditioning and ice cream and sunblock have gone through the roof. Unfortunately for Jon, this day is also the day he promised the twins, Drusilla and Minerva, he'd take them camping in the woods. Odie and a very reluctant Garfield are dragged along for the ride.