The cadets receive a distress signal from the planet Grom. Every day, a deadly laser line beams down from the sky and creeps towards the Gromlers’ capital city. If the Gromlers don’t gather enough precious minerals by the deadline the laser will reach the city. Doug and the cadets must find a way to stop the laser and find out who’s behind it. (Duration: 30:28). Theme music by Kevin Macleod – Incompetech.com.