Avatar: The Last Airbender (2005)

S3E9 Nightmares and Daydreams

Four days before the invasion, Aang is filled with apprehension about his impending showdown with the Fire Lord. His mounting anxiety manifests in vivid nightmares and unsettling hallucinations. At the same time, Zuko feels frustrated when he discovers that he was left out of the loop regarding an important war meeting.