Logan Gramm meets a strange woman named Tammi Hansen, who claims to be the recruiter for ProGrade Kronotechnix, a company from the future whose mandate is to "fine-tune" history. Logan enlists as a PGK operative, which places him in the crossfire of significant moments from the past. Then a company innovator devises a method to bring clients forward in time, enabling Logan to experience the technological wonders-and political terrors-of a city called Solerograd. With the government watching his every move, Logan must choose whether to remain in Tammi's world or convince her to follow him back to his.