During the mission to attack one of Dr. Ivo Robotnik's energy plants, Arlo's hand glider was struck by an anti-aircraft turret and he crashed. While Penelope Platypus remained by his side, the rest of the team, with help from Geoffrey St. John, proceeded with the mission and destroyed the base. While the team was away, Arlo and Penelope were discovered by Royal Underground agents Fleming and Smiley, who moved them to safety and provided Arlo with medical treatment. Arlo and Penelope rejoined the group of trainees during their attack against another of Robotnik's bases, which saw the destruction of the Sally Auto Automaton. (PSM: #1, #2, #3)