As Stalin's purges and arrests increase, Sasha and his mother plan to leave Russia to join his father and older sister who have emigrated to Riga, Latvia.
Kenneth and Aleesa, working on an extra credit project about Socrates, suddenly find themselves in ancient Athens, where they meet the famous philosopher and try to save his life.
Brothers Tim and Josh find themselves alone in the wilderness after surviving a plane crash in which the pilot dies and must make their way back to civilization.
While studying migrant farm workers of the 1960's, Kenneth and Aleesa travel back in time and meet Cesar Chavez during the farmworkers' strike for fair treatment and better pay. Can they protect Chavez and his dream for his people from sabotage?