Boris, a cranky dog, and Rufus, an excitable ferret who believes himself a dog. They belong to Enzo, a teenager in love with his neighbor, Jennifer, who owns an internet-famous cat, the insufferable Leopoldo. When the owners are not around, the animals stop behaving like pets; they use electronic devices, access the "interpetnet" (the animals' web), play video games and get involved in all sorts of shenanigans. The conflicts between Boris' and Rufus' personalities, plus their encounters with fantastic beings and items, lead to great adventures that can go far beyond the "real" world.