In order to get to the main water supply, Laura has to try and get the Parasaurolophus out of their enclosure. There are four Parasaurs, to which one of them is standing guard. The only way to get them out is to sound the feeding call and the mating call from the speakers close to the gate and then finally sound the warning siren. Laura, Jess and Gerry work together to do so. Once the Parasaurs are out, Laura sees to the water tank. Gerry learns that the Parasaurolophus standing guard was actually injured, hence why she was the one standing guard. Laura and Jess climb to the top of the water tower.