yu yu hakusho episode 4

yusukes body gets trapped in his burning house keiko goes in to save him she grabs the body then she gets stuck in the burning building. Yusukes soul throws his magical egg in the fire, the monster in the egg makes a pathway through the burning building. But he did not know that if he threw his egg in the fire he can not come back to life.But Koenma gives him another chance at life