The Wild Kratts are hanging out with Emperor penguins at the South Pole and wondering why penguins don't live at the North Pole. All of a sudden, Koki gets a report from Wild Kratt Kid, Nua, that there are penguins stranded in the Arctic. What? They're not supposed to be there! The Wild Kratts spring into action to investigate this mystery and get the "lost" penguins back to their natural home.
After Aviva successfully sneaks up on and surprises the creature adventuring Kratt Brothers, they worry that they've somehow lost their signature 'creature sense'. Chris and Martin go off in search of the stealthiest, most powerful wildcat in the world - the tiger - on a quest to prove to themselves that they're still in tune with the creature world.
Jimmy Z is a member of the Wild Kratts crew. He is the main pilot of the Tortuga HQ and operates the Tortuga's teleporter, often teleporting the Creature Power discs, along with various other equipment, to the Kratt brothers.