In the distant future, mankind has taken to the stars and formed the Galactic Alliance of Humankind (人類銀河同盟 Jinrui Ginga Dōmei). The Alliance is engaged in a perpetual war with a tentacled alien species known as the Hideauze (ヒディアーズ Hidiāzu). 16-year-old Ensign Ledo is a soldier in the Galactic Alliance, piloting a Machine Caliber (マシンキャリバー Mashin Kyaribā), an AI-automated, humanoid-shaped battle suit, which he refers to as ‘Chamber’. After a failed attempt by the Alliance forces to destroy an enemy super-weapon, Ledo is knocked into a wormhole and loses consciousness. When he awakens, he learns from Chamber that he has been in cryo-stasis for 6 months while his wounds were healing. Ledo learns that he and Chamber have been ‘found’ by a rag-tag band of ‘primitive’ human scavengers. Ledo quickly discovers that he is on board a massive fleet of ships on an ocean-covered planet. Chamber tells him that local star charts reveal the planet is Earth, the birthplace of humanity, a place that members of the Alliance were only familiar with from stories and believed was a myth. – Source
I am currently on episode 6 of 13, and loving this anime. I’m a fan of the mech genre anyway, so it was to be expected that I’d enjoy this, however I’m more engaged in the relationship between Ledo and his mech “Chamber” and their integration into the “primitive” society. The writers of the show have put a lot of thought into how people would react to a futuristic mech and it’s alien pilot, including language barriers, and social ceremonies. So watching the awkward interactions is highly amusing. I won’t spoil any of the plot for you, but I highly recommend you check this show out for yourself. It’s only 13 episodes in comparison to most anime which normally spans 25 episodes or so.