In this steamy biopic, psychology professor William Moulton Marston (Luke Evans) indulges in his kinky side with his wife Elizabeth (Rebecca Hall) and their lover Olive Byrne (Bella Heathcote). The trio explores bondage and BDSM, with the professor using his knowledge of human psychology to push their boundaries. In one intense scene, he binds Olive's wrists and ankles, leaving her vulnerable and exposed, while Elizabeth watches, her own desire mounting.