Nate tracks an outlier anachronism to 1895 London, where a series of mysterious deaths have occurred, apparently caused by a vampire. Rip is already on the scene, and asks the Legends for their help finding the killer... and an ancient evil.

The team sets out to investigate an anachronism in 1960s Vietnam, and discover that a strange creature is attacking both American and Vietnamese soldiers. Meanwhile, Mick meets a figure from his past, and Jax sets out to prove that he can be a hero without Firestorm.