Joel arrives in London to find his boss waiting at the airport. He has no idea what's about to begin.

Her messages become sexual, the boundaries disappear and Joel learns the danger of not responding.

The messages become intimate photos, crossing another boundary as her obsession takes a darker turn.

Joel has kept his girlfriend a secret from his boss but she finds out and tracks her down.

Joel confides in a colleague. They go to management but are warned: "Don't go to HR."

Joel finally reports his boss for sexual harassment and there's no going back.

Joel is finally free but the damage follows him home, leading to a breakdown that destroys his relationship.

A year later, everyone has moved on. Then Joel's boss reappears where no one expected.