All of the dogs are so excited that their old friend K.C. is back on the island for a couple of days. Cleo, however, is particularly excited and focuses all of her attention on him at the expense of T-Bone and Clifford. She discovers that being a good friend means you should be kind and considerate to all your friends and not take any of them for granted. Mac is particularly disappointed when rainy weather threatens to ruin the upcoming Back-to-School Barbecue held every year at Jetta’s house. The other dogs, seeing his disappointment, vow to find a way to stop the rain from falling. It doesn’t take long for them to realize that you can’t change the weather. But Mac’s disappointment is replaced with delight that his friends would go to such lengths to try and help him.