Justice League Action: Season 1, Episode 21 - ProjectFreeTV

1 - 21: Inside Job

"Inside Job" When Superman is infected with a nanobot swarm that is sucking up Superman's solar energy upon being shot into him by Lex Luthor, Atom shrinks Batman and Wonder Woman down to micro-size so that they can enter his bloodstream and dispose of the nanobot swarm by disposing of the nanobot queen.