During a dangerous zero-gravity mission to keep a clash in space from colliding with Earth, Ao meets his mother for the first time since she disappeared. Chaos erupts when the vengeful enigma known as Truth learns of her return. As Ao fights to protect his mother and solve her transient state, he discovers a weapon so powerful it can alter Earth's timeline.
Conflict elevates across the globe as this warhead and new intelligence on the hostile aliens polarizes former allies. When another pilot and his machine from the future enter the fray, Ao will finally learn his true origin - as well as his role in saving his mother, his friends, and his planet from obliteration.
Contains episodes 13-24 and the OVA The Flowers of the Jungfraujoch.