"Xander contracts the mysterious virus of the Rainbow-Barfing Unicorns. The virus gives the unicorns their barfing abilities, but it's draining Xander of any color at all! Xander's fate lies in the hands--er hooves--of Ronk, the most dimwitted of all unicorns. This is not good. In fact, this is bad--really, really bad. Plump-full of grotesquely delightful characters and fantastical realms, Xander and the Rainbow-Barfing Unicorns are so epic they'll...

Xander Stone has been hiding his three friends the Rainbow-Barfing Unicorns in plain sight as part of a magic show, but now a regular unicorn has found her way through a portal; problem is the virus that turned them into zombie-like creatures has apparently given his three friends a craving for unicorn flesh--so when they all use to the portal to return to Pegasia Xander follows to try and restrain his friends (especially Ronk), and solve the mystery...

Everybody thinks that the "ponies" in Xander's magic show are made to look the way they do (like zombie ponies) with tricks and make-up, but the eccentric billionaire Russ DeVon knows what they are (the unicorn part, at least) because when Russ was nine he discovered Pegasia, and was kicked out for trying to steal a baby unicorn--and now he will stop at nothing to get back there.