Dedbert is a student at Underworld Elementary a school for kids who have died in outrageously wacky ways. Unfortunately Dedbert doesn't fit into any of the school's necro niches. He died flushing himself down the toilet and now he's the butt of all butt jokes. Then one day a new student Skully arrives. And guess what She's Dedbert's death twin they died in the exact same way These two quickly become friends and discover that they truly are Tombstone Twins. Soul mates.