Life is one long, hard slog for the fish-filleting foursome Pearl, Jan, Shelley and Linda. But their fortunes are set to change when they head to Ladies Day at the races. Factory hairnets make way for fascinators as the four friends hit the races for an unforgettable day out.

Secrets are spilled with the champagne and friendships are tested to the limit. Yet as the day unfolds and tempers fray, their accumulator bet keeps quietly winning. If their luck and their nerve holds, the ladies could could hit the jackpot – and more.