Attack on Titan or Shingeki no Kyojin is a popular Japanese dark fantasy anime series based on the manga of the same name by Hajime Isayama. The anime series is about the adventure of Eren Yeager and two of his friends Mikasa Ackerman, Armin Arlert. They live in a place that is surrounded by gigantic walls due to the fear of Titans.
These Titans are monstrous humanoid being who feeds on human beings for no apparent reason. The series shows how these three friends deal with the situation when a Colossal Titan invades the wall of the place where they live, and Erin Yeager witnesses a traumatic event. These three friends join the Scout Regiment which is an elite group of soldiers who fight Titans and takes a pledge to take revenge from these Titans and get back their home town from the Titans.
The first season was aired in April 2013 which shows the journey of Eren and how he and his friends join the Scout Regiment and fight with the Titans to protect his people and seek revenge. The second season was aired in April 2017, there was a long gap between the two seasons due to the lack of the source material for season 2.
Season 3 was aired in July 2018, and the ended in July 2019. The final chapter of the Season 3 exposed the mysterious history of the world in which the series has taken place. The protagonist comes to know that they are evolved from a race called the ‘Subjects of Ymir’ who can transform themselves into a Titan. Eren and the Survey Corps now are sure that their enemies are the nation of Marley.
The producers of the showed announced the news about the fourth season right after season three got over. As per the speculation Attack on Titan season 4, which was scheduled to be released in the fall of 2020 will be the final season of the entire series. But due to the COVID -19 global pandemic, the release has been postponed. As of date no official release date has been announced of the much-awaited anime series.