In a future where England is submerged, Norwich has transformed into an island.

Zoe, abandoned amidst the chaos as her parents fled, struggles to survive in this harsh new reality. Isolated and vulnerable, she navigates a landscape rife with hostile gangs until she uncovers a dilapidated boat buried in the mud, allowing her to escape to Eels Island. However, Eels Island, ruled by the enigmatic boy Dooby and his ragtag community, presents its own set of perils.

Driven by the hope of reuniting with her parents, Zoe embarks on a daring journey, showcasing her bravery and resolve in a narrative infused with compassion and humanity.