John gives Herbert a 12-hour deadline to repair the time machine. While Herbert and Jane try to find a gem needed to restore the machine's function, John meets a neural pathologist named Brooke who is intrigued by his good looks and charm.

After discovering that John has traveled to 1918 to save his son, Herbert goes after him and forbids Jane from traveling with him. However, she soon discovers that the son is fated to die that day... and so, apparently, is Herbert. Meanwhile, Brooke takes steps to eliminate a man who can lead Vanessa to Project Utopia.