A compilation of the Seikai no Monshou series with additional footage. Linn Jinto's life changes forever when the Humankind Empire Abh takes over his home planet of Martine without firing a single shot. He is soon sent off to study the Abh language and culture and to prepare himself for his future as a nobleman — a future he never dreamed of, asked for, or even wanted. Now, Jinto is entering the next phase of his training, and he is about to meet the first Abh in his life, the lovely Lafiel. However, Jinto is about to learn that there is more to her than meets the eye, and together they will have to fight for their very lives.

Based on a science fiction novel series, Crest of the Stars (Seikai no Monsho) is the first installment in this sci-fi saga. The story follows Jinto, whose world was taken over by the largest empire in the galaxy: the Abh. Jinto's father, the planet's prime minister, handed their world over to the Abh in exchange for a standing in the Abh Empire. As a result, Jinto became a prince and was shipped off for an Abh Education. There he meets a princess of the Abh Empire, Lafiel, whom he quickly befriends despite her cold exterior. The Abh Empire is plunged into war soon after and the story continues from there...

Three years after their adventure, Lafiel becomes captain on the brand new assault ship Basroil and Jinto finishes his training to become a supply officer and joins Lafiels crew. They set out to join a large fleet with the mission of defending the strategically important Laptic Gate from a force 15 times larger than their own. And to bring even more worries, their new fleet commander is from the Bebous family, a family notorious for their "Spectacular Insanity".