Ava's new kitten, Tiger, may be small but he makes up for it with his big personality and sense of adventure. As Tiger gets up to various escapades Ava finds herself coming to the rescue, even having to save the kitten from next-door's dogs when Tiger climbs over the garden wall. But when the kitten disappears one night Ava has no idea where he could be. Meanwhile, Tiger is stuck up in a tall tree, cold and alone.
The next day Ava is walking home from school with her friend Jess, about to put up missing posters, when she hears a meow and spots Tiger. The girls go to get Jess's dad, who has a tall ladder, but the terrified kitten only retreats further into the tree as he sees this strange man approach. Ava bravely climbs up with some cat treats, and she and her beloved kitten are reunited.