The year is 1889 (Infini Calendar). Twelve-year-old Nelly Flowers is accompanying her parents on a journey to Wichita with the ultimate goal of staking a claim in the Oklahoma Land Run. However, when their airship is attacked by pirates—with Nelly the apparent target—she'll have to find the courage she isn't sure she has and entrust her life to mysterious new friends in order to save everyone. The dreaded Gnostagar have returned, and for the first time humans must journey to their world. Said humans are (somewhat) up to the task, but can a child, an Austrian cowgirl, a rebel Gnostagar and an anti-social Lincoln-hater really stop these shape-shifting monsters?