The most significant story change comes in how Hanna leaves Finland (in the movie) or Poland (in the show). In the film, Erik always intended for Hanna to leave their weird domestic bliss and meet Marissa – after all, that's what he's prepared her for. When Hanna is 16, Erik lays out a transponder that will signal their location to Marissa. "If you think you're ready and want to leave here, all you have to is flip that switch," he says. Eventually, Hanna presses the red button, signaling the end of her childhood. She's caught by the CIA and taken to a facility in Morocco, with the intention of eventually meeting up with her father in Berlin. And so our story begins.