Joanna, Freya and Wendy travel back in time to revisit one of their past lives in order to retrieve a powerful but dangerous weapon that may be the only way to destroy Nikolaus for good. Back in East End, Nikolaus is preparing for a battle and also has an unsuspecting Ingrid on his side. Meanwhile, Dash discovers the true identity of his one night stand, and Killian attempts to break his and Freya’s tragic cycle.