When Sheena is forced to move back to Kiltie Street, she is unsure how she will start all over again. With the help of friends old and new, she finds work at a garment factory. And though she catches the eye of some local men, her fiance Jimmy, serving overseas, is never far from her mind. As life settles down, a surprise appears at Sheena's door: a woman named Amy, claiming to be her cousin. Amy has strange habits and a frantic personality - but Sheena agrees to house her for the time being. However, her suspicions grow around Amy's secretive ways, especially when Jimmy returns from war, and Amy refuses to leave the newlyweds. With help from the rest of the Kiltie Street girls, can Amy and Sheena find a way to mend their differences, and be a family once again?