'In Horsehead Boy Spud was a brain in a vat, until he stole someone else's body. In Horsehead Man he took a human horse to the racetrack and caused total chaos. But when Spud and the horse fell into a tank of liquid nitrogen they were frozen solid for years and years. Now in Horsehead Soup, the horse, Spud and their two mad brain surgeon mates have all woken up in the future only to discover they are exhibits in a Year 2000 theme park. History was never this weird!!'
Source: Publisher's blurb.