The finale centers on a biological crisis in London and a pivotal personal moment for Alfred Pennyworth.
: Amidst the escalating violence, Alfred finds Sandra Onslow. Despite the danger and her initial reluctance, Alfred confesses his love, tells her the truth about his past, and proposes.
: London descends into chaos as the city's milk supply is spiked with "Lullaby," a hallucinogenic drug that induces a suggestible, trance-like state. Prime Minister Aziz falls under its influence, leading to a catastrophic breakdown in government communication.