Wrth i dad duwiol Gaynor yrru ei chariad i ffwrdd, mae'n sicr na fydd yn gallu caru unrhyw un arall. Ond daw Almaenwr ifanc i'w helpu i anghofio'i thristwch - hyd nes y mae'n rhaid iddo ddychwelyd i'w famwlad oherwydd y rhyfel, gan adael Gaynor â chalon friw unwaith yn rhagor. A phan ddaw ei rhieni i wybod ei bod hi'nfeichiog, mae'n dianc i Gaerdydd.

When Gaynor's God-fearing father drives her childhood sweetheart away, she's certain she will never love again. But a young German soon helps her to forget her sorrows. Until, with war looming, he must return home and Gaynor is left heartbroken once more. And when her parents discover she's pregnant and insist she cannot keep the child, Gaynor runs away to Cardiff.