2014, fifteen years after a war between Earth and Mars. Desiring peace, Princess Asseylum of Mars holds a goodwill parade on Earth. Slaine a boy originally from Earth prays for her safety Meanwhile, o…

The Landing Castles of the Mars Knights that have landed on Earth launched an attack using Kataphraktos with the aim of invading the planet. The United Forces of Earth launch a counteroffensive. As th…

To complete his plan, the Mars Knight relentlessly pursues Inaho and the others. Inaho is suspicious about the manner in which that knight fights. With backing from Marito’s group, Inaho begins a coun…

Slain has misgivings about the war. However, he has no allies around him and no way of telling who the enemy is. Meanwhile, Inaho is entrusted with a secret request by Seylum as Rayet, who is hiding h…

Rayregalia, ruler of Mars, orders that an investigation be conducted on Earth. Slaine takes advantage of this opportunity to speak with the Martian emperor in person. Elsewhere, the assault landing sh…

There were no traces of the battle that once occurred on Tanegashima, which was heavily damaged in Heaven’s Fall. When they arrive, Marito is flooded with memories of the fierce fighting there. But th…

Inaho and the others are hard pressed in their fight against the Martian Kataphraktos. But then a mysterious fighter craft appears and joins the battle. Elsewhere, Darzana and her crew hide the damage…

Slaine is interrogated under the assumption that he knows something. Slaine manages to keep silent and not reveal the truth, thinking back to the time he once spent with Princess Asseylum. Meanwhile, …

Inko and the others undergo piloting training in a Kataphraktos combat simulator. Inside, Rayet reflects on her hatred, anger, and fear towards the Mars Knights, as well as her own circumstances. Yaga…

Seylum thanks Inaho for everything and then leaves. Elsewhere, Slaine learns Count Saazbaum’s true motives. Yagarai gives Capt. Magbaredge Marito’s patient chart. Feelings begin to stir within each of…

Count Saazbaum launches his attack. The UEF meets its offensive in this land of brutal cold. Inaho and the others put together a plan to fight back. Working on his own, Slaine makes his way through th…

While Inaho and the others are carrying out their plan, they encounter Count Saazbaum’s Kataphraktos. Slaine, who had been trying to catch up to Princess Asseylum, finds himself in an unexpected situa…

2016, a year and a half after the assassination of Princess Asseylum. Slaine, who has earned the status of Mars Knight in spite of being an Earthborn is now served by his own personal subordinate and …

At the Vers Empire’s frontline stronghold in Earthspace, Slaine leaves for their base on Marineros Island accompanied by the Stygis Squadron, compound Kataphraktoi. Meanwhile, the Deucalion arrives at…

The Mars Knights have assembled at Marineros Island. Slaine tries to take part in the battle, but he is looked down upon by his erstwhile fellow knights because he was born on Earth. Elsewhere, the cr…

Lt. Marito, who is serving with Yuki Kaizuka, receives orders for a new operation. Yagarai is concerned about the position this will put Yuki in, who has been assigned to a unit away from the Deucalio…

Irritated by Slaine’s actions, Count Marylcian works out a new strategy with Count Barouhcruz. Elsewhere, Rayet loses her composure in front of the Mars Knight prisoner, and Inaho deduces her true int…

Princess Lemrina is distraught over an unexpected situation, but Slaine tells her that on the contrary, he will use it to his advantage. But deep down, he gradually feels more and more cornered. Elsew…

The Orbital Knights rally under Princess Asseylum’s new proclamation with renewed determination. Slaine launches a new operation, partly to contain the factions who are against him. Elsewhere, Capt. M…

The UFE is overwhelmed by the Mars Knights’ advance. Inaho and the Deucalion take part in the fighting, but they find themselves hard pressed by an unexpected attack. Elsewhere, Slaine unburdens himse…

Under orders from United Forces of Earth’s General Headquarters, the Deucalion and her crew take part in an assault mission. They formulate a plan that will let them fight the Mars Knights. Elsewhere,…

The Deucalion receives new orders, but Capt. Magbaredge senses that another mission is in motion behind the scenes. Inaho takes action to protect Princess Asseylum. Elsewhere, Slaine explains his inte…

Inaho and the crew of the Deucalion steel themselves for the final battle. Capt. Magbaredge confronts Vice Admiral Hakkinen and takes part in the dangerous mission. Meanwhile, Slaine is determined to …

The war has come to one final battle. Having reached an understanding, Slaine resigns himself to his fate. Elsewhere, Inaho answers the call of his own destiny. There is someone who sheds tears at the…