1972. Hired to rescue a young woman believed to be under the spell of a dangerous hippie cult, Pennyworth seeks help from a preoccupied Bet, while Thomas and Martha field a surprise visit from Patrick.

While grappling with the true nature of Martha's work, Thomas agrees to help his father - and seeks Alfie's assistance. Meanwhile, after being questioned by Aziz, Pennyworth escalates his search for answers at the ashram.

While Pennyworth deals with an old friend, Daveboy grapples with his conscience in a very public way. As tensions run high in the Wayne household, Thomas plots with Patrick, and Martha receives a proposition - and warning.

After Thomas is thrown behind bars, Patrick offers Alfie and a hesitant Daveboy a hefty sum to break his son out of jail.

Thomas and Martha are still haunted by everything that happened. Aziz tasks Alfie with spying on a visiting political dissident. Daveboy continues to try to impress Sally.

Zahra sets out to find her father with help from Alfie; Bet confronts the full extent of John Salt's powers, Daveboy bungles an important conversation with Sandra, and Thomas finds himself back in Gotham.

Alfie and Daveboy search for a secret prison in the Hebrides which generates power by triggering traumatic memories.

Thomas' hesitant return home is further complicated by Samantha's kidnapping. Sally involves Daveboy in the aftermath of Foulkes' dinner party. An increasingly concerned Lucius seeks to free the PWEs.

As the city further descends into a lullaby-induced chaos, Alfie and Martha break into L7 to save Lucius--and the rest of the world.