In the summer of 100 AG, Team Avatar stopped at the secluded hot springs to relax. Aang discovered a water tunnel and joyfully took a slide through it, however, as his arrow tattoos were exposed, he unknowingly revealed his identity to two Fire Nation watchmen when he exited the tunnel. Stunned to have discovered that the Avatar was alive, contrary to the world's belief that he was dead, the two sent a message for Fire Lord Ozai via messenger hawk. The hawk's journey to deliver the message, however, was intercepted by a raven eagle who attacked the bird and retrieved the message. The eagle subsequently gave the letter to its master, an assassin hired by Prince Zuko to eliminate the Avatar, later known to Team Avatar as Combustion Man.