When Hippocampus is ostracized for his unconventional appearance, Tyrannis takes him to a science convention where he is finally appreciated for his intellect. When her friend is turned to stone, Stupendous enlists the help of Deliria who is determined to turn him back and prove she is better than Athena.

When Tyrannis is possessed by his deceased grandfather who rules with fear and a large scorpion tail, Shlub must fight to bring back the old Tyrannis. After Hippocampus and Stupendous bring a pregnant pegasus home, they release a range of mythical monsters to control the pegasus babies that terrorize the city.