It is 1942 and, in the wake of America's entry into the war, the small community of Pontypridd suffers its own - not entirely welcome - GI invasion. The South Carolina Regiment billeted on the town soon cuts a swathe through its women, living up to GI's reputation as "over-paid, over-sexed and over here". For Bethan, whose husband is a POW in Germany, and her friend Alma, whose husband is missing, the arrival of the American officers brings new and dangerous friendships. While for Jenny, a bitter young war widow, it is a chance to bury her grief in a series of one-night stands. The women are caught between loyalty to their men folk and the very real attraction of the GIs, and when tragedy strikes the mines, the tension reaches breaking point...