Jillian and Everett's wedding plans are upended when fellow time-traveler Dr. Duval steps out of the shadows and into their lives. Removing the Eiffel Tower as part of an experiment, Duval inadvertently creates a new timeline where the United States of America disappears in 1804 and is replaced by a French monarchy. Duval may not care whether America is a kingdom or a democracy, but he'll stop at nothing to understand how spacetime...