LONDON — U.K. shingle Big Rich Films has optioned Owen Sheers’ WW2 novel “Resistance” for the bigscreen.Amit Gupta will write and direct the pic, which is set in an alternative 1944 where Russia has fallen to Nazi Germany and the D-Day landings have failed. With Britain now half-occupied by German forces, the women in an isolated Welsh border valley awake one morning to discover all their husbands have mysteriously disappeared. Richard Holmes (“Eden Lake”) will produce the project, while Sheers will co-write the script with Gupta. “It’s such a beautiful novel and its cinematic potential was clear from reading the first chapter,” said Gupta. Project, which has a budget in the low seven figure dollar range, is likely to start lensing on location in Wales next year.