Tiger and Cat are the best of friends. So, when Tiger has to go away to Tiger camp to earn his stripes, not for a few hours, but for weeks, months, years maybe... Cat is left with an empty house and a lonely heart.
As it turns out Tiger isn't very good at doing Tiger things. And, besides, he misses drinking tea with Cat. While he doesn't change his stripes at Tiger camp, he does learn where he belongs. With Cat.