Since Attack On Titan first season wrapped, the series has become an international hit amongst audiences. MORE: Attack on Titan Has About 3 Years Left / Attack on Titan Manga Sells 60 Million Copies Worldwide / Kodansha's Attack on Titan Anthology Preview Released / Attack on Titan Season 2 Confirmed But, as they grow older, they learn that the beasts are not what they appear as long-held government conspiracies make themselves known. When their sanctum is infiltrated by a slew of Titans, Eren and his friends Armin and Mikasa join the military to help eradicate the blood-thirty monsters. These mindless beasts have all but wiped out humanity, and mankind is left to cower in fear behind massive walls. The anime follows a boy named Eren Yeager in an alternate world overrun by massive creatures known as Titans. If you are not familiar with Attack On Titan, then you should know the popular anime is renowned for its intense action and gritty storylines.