An envious friend pushes a beautiful wife towards infidelity, launching a once-happy couple on a dark, twisty ride. While they struggle to keep their marriage afloat, deep-seated insecurities, vanities, and traumas strike from every corner and crevice. Along the way, they gain unexpected emotional and sexual insights; but a sudden plunge casts them adrift, separately, towards nightmares, temptation, and domination. The tunnel becomes a crucible, which will either reforge or destroy them.
