Thanks to the invention of the Guru Guru Bone, Ponta can now change from puppy to teenage girl at will. But human customs are hard to master, and she keeps finding herself in strange and awkward situations. Will Ponta have to spend Christmas in the dog pound? Will she ever attract her one true love, cute high school boy Mirai? She's certainly lovable enough - maybe that's why transfer student Go Fujinaga falls for her instantly! Romantic misadventures ensue, as Go moves heaven and earth to induce beautiful, innocent Ponta to look his way. . .