Meet Koen de Groen. 63, retired engineer. Living on his farm, minding his own business. Two kids, one in the Royal Navy, the other an engineer like his dad. Happily married to Sylvia, his soulmate from highschool. So far so good. Life was good.
Until one day Sylvia told him she was not so happy in their marriage. When they were young, they experimented with all kinds of sexual variations, including kink. And now, out of the blue, she is telling him she wants – no, she needs – to go back to the kinky lifestyle they had when they were just married.