Two weeks after the Cell Games, Gohan, shaken up by his battle against the android, is plagued by horrible nightmares.
One night, his dream is invaded by a mysterious, omnipotent figure dressed all in black. The figure gives the boy a warning, showing him what enemies await him on the path ahead and the consequences that will befall him and his friends should he be unprepared to face them.
This experience tells Gohan to rethink his life's choices and gives him the motivation he needs to continue his training after the Cell Games.