Joined by his friends, Sam and Riya, Will journeys to Fire Desert, where rumours of a creature called 'the Grip' have struck fear into the hearts of the animals. Even Captain Claw, a fierce lioness, seems to be acting strangely on hearing the news.
Will, Sam and Riya travel to the Tusk Temple in search of Maji the time-travelling elephant. But the temple is in danger. The only way to save it is for Will to undergo the Night Zookeeper trial - facing leaps over bottomless caverns, impossible puzzles, and an ultimate test in bravery.