This episode of Black Mirror is the story of a couple, but suddenly the man dies in an accident.

The wife lost her husband and had a hard time moving on.

While she was grieving, a friend told her about an app that lets her talk to people who have died, by scanning their internet activity, such as posts and tweets.

At first she was completely against using the app, but then she found out she was pregnant, she changed her mind because she needed someone to talk to.

So she tried it and got addicted to the app.

She stayed until late at night to talk by message with her dead husband.