 After Thea is mistaken for an escaped slave and taken into custody, Eli joins Lewis and Clark's Corps of Discovery in hopes of finding Clyne, a means to rescue Thea, and transportation home.While trying to escape and regroup, Eli and his friends make important discoveries about their "accidental" stumble into 1804.It looks like they were lured by a Prime Nexus, which they may have caused, and which will surely change all of history to come.