Iver, Tula, and Groove are Hoobs who come from Hoobland, a sunny, colourful, bouncy world. They travel the universe in their Hoobmobile, a colorful, imaginative bus that they live in as well as drive.
Each day, they are charged with the task of finding out the answer to a question about the world they are visiting. They then report their findings to Hubba Hubba Hoob back home in Hoobland, who is compiling the enormous reference database called the Hoobopaedia. This information is then broadcast to Hoobs everywhere via the Hoobnet.