On the outer reaches of Titan space, a dangerous Titan mercenary finds himself marooned on a planet far from home. He must find a way to survive the local wildlife, a strange ecosystem, his own injuries while looking for a way to reconcile his bloody past. He finds out that the planet has a higher oxygen level and time is running out before his blood is poisoned and he becomes a permanent fixture of this planet's ecosystem. His name is whispered like an urban legend throughout Titan society and one way or another, when you cross Lupis, you will never be safe again.