Three siblings, Sadie (Isabela Moner), Noah (Colin Critchley), and Dudley (Jet Jurgensmeyer), go on a jungle tour to the 'Hidden Temple' theme park where Kirk Fogg, now a tour guide, works. Noah, being fascinated by the legends of the Hidden Temple, wonders if he could explore it on the inside, much to Sadie's annoyance. Noah and Dudley go to the restricted area where the secret entrance is believed to be. Sadie tries to stop them, but accidentally steps on the trapdoor that sends them into the temple.