The Zoo Crew is approached by a new pterodactyl super-hero called Stormwing, who seeks membership in the team. Before the team can discuss it, Doctor Hoot and a group of the Zoo Crew’s old enemies attack the Z-Building! But the worst is yet to come, when old menaces and new plague Captain Carrot and the Zoo Crew in the form of Debbil-Dawg and an evil clone of Stormwing called the Pterror-dactyl! With all this going on, will Stormwing get the chance to prove his worthiness to be the eighth member of the Zoo Crew?