Would-be parents in the Netherlands look online for sperm donors. When they meet charismatic Jonathan Jacob Meijer, they have no reason not to trust him.

A network of parents with children by Jonathan spreads across the world. When he refuses to stop donating, they take matters into their own hands.

A determined lawyer is persuaded to take the case. But it might be years before they get a verdict — and Jonathan could keep on donating until then.