You will Watch Danny Phantom Episode 18 online for free episodes with HQ / high quality. Stream cartoons Danny Phantom Episode 18 Life Lessons Danny and Valerie are forced to work together by watching a sack for health class. Skulker wants to see which is more worth of a fighter Danny Phantom or Valerie so to get them fighting. Skulker uses Box Ghost to lure them together and when the battle ends shortly Skulker is outraged and has a new plan he decied to hunt them both in the ghost zone on his island. Will Danny and Valerie work together to make it off the island alive?