1916. As thousands of Brits are fighting on the Front Line, a new breed of women emerges to hold the Home Front together. Fiercely independent and fiery-spirited, the munitionettes, or 'canaries', are easily recognisable with their chemically-stained yellow faces. Among the raucous group of women is Florrie Duncan, who plans to celebrate her birthday in style at the Golden Goose pub. But the celebrations are cut short when all but one are killed in a brutal explosion.