Suspended in the nothing between timelines, the station Janus is an unseen marvel; the greatest technological achievement in human innovation. From Janus, Gustavo and his hand-selected team of historians and engineers incur into the past and observe history unseen and unnoticed. But they are not alone. Another traveler is shattering history, unhindered by desires to remain scientific and uninvolved. The intruder's technology is greater with methods more brutal, and a physique more terrifying than anything Gustavo and his team were prepared for. As they apply their intellects and skills toward solving the mystery of the ferocious interloper, they quickly realize that they have attracted its attention ...