The story is set in the removed future. The land is demolished, and mankind sets up the portable post city Plantation. Pilots delivered inside Plantation live in Mistilteinn, likewise know as the birdcage. Children live there remaining unaware of the outside world or the opportunity of the sky. Their lives comprise of engaging to do missions. Their foes are secretive goliath lifeforms known as Kyōryū, and the youngsters pilot robots canceled Franxx to look against them. For the kids, riding the Franxx demonstrates their reality. A kid named Hiro is called Code:016, and he was once known as a wonder. Nonetheless, he has fallen behind, and his reality appears to be pointless. Not guiding a Franxx is the same as stopping to exist. One day, a baffling young lady known as Zero Two shows up before him. Two horns become out of her head.