Danny, Tucker, and Sam are getting ready for summer vacation, but when Freakshow arrives and kidnaps their parents, they must find the Reality Gems for the Reality Gauntlet in order to save them! And in the chaos, Danny's secret identity is revealed to everyone!

Danny and his friends get caught up in a time-traveling adventure. They are taken into a dark future, in which Amity Park is destroyed and the world's most powerful and evil ghost is Danny's own future self!

When Vlad Plasmius accidentally awakens Pariah Dark from his eternal slumber, the king of ghosts reigns terror on Amity Park. Now Danny Phantom and his enemies must band together to stop this super ghost from taking over both Earth and the entire Ghost Zone.

When Plasmius' new ghostbuster team outclasses Danny in the field, the boy decides to remove his powers and retire, unaware of an approaching massive asteroid threatening Earth.