The Goodies (1970)

S5E13 The End

The Goodies find their office entombed in a sudden avalanche of wet concrete, sealing them inside what becomes a makeshift time capsule. As the decades crawl by, their desperate bid for survival turns into a slow descent into hunger-induced hysteria. Cramped, starving, and increasingly unhinged, they hatch increasingly absurd schemes to break free, all while their sanity crumbles along with their surroundings.