Danny Phantom (2004)

S3E12 Phantom Planet

After experiencing humiliation at the hands of Vlad's ghost-hunting crew, Danny longs for a return to normalcy. He decides to relinquish his abilities by reactivating the Fenton Portal, which Jack had taken apart for an upgrade. However, a menacing asteroid composed of Ectoranium is on a collision course with Earth, and Vlad, having unveiled his identity as Plasmius, is unable to thwart it. Now, the fate of the world rests on Danny's shoulders as he must seek assistance from the spirits of the Ghost Zone without his powers!