Alice’s parents refuse to let her have a dog, so when Alice sees a paint stain on the sidewalk that looks like a dog, she decides that she will make him a virtual pet. She calls him Splotch and downloads a picture of him to her computer. To her surprise, he escapes from the computer and begins to act as Alice’s self-appointed protector. Unfortunately, he sees most people as potential enemies of Alice, including her teacher and the principal, and he is not shy about giving those various enemies a bite. When Splotch starts to attack Alice’s best friend, Alice knows there is a big problem. But how will she get Splotch to stop being a guard dog and back into the computer?