Three years after Char's Counterattack, ordinary student Banagher Links crosses paths with Audrey Burne, a girl trying to head off a war over the Vist Foundation's best-kept secret, Laplace's Box. His encounter with the mysterious Unicorn Gundam, the key to that box, pulls him into open fighting between the Earth Federation and the Neo Zeon remnant faction the Sleeves, led by the masked Full Frontal. This manga retells the Mobile Suit Gundam Unicorn story, adapting the original novels.