It is a world where a device is implanted behind the ear that records what the individual sees and hears, and can later play it back as a video. Everyone is living with this device. Even in corporate interviews, you are asked to show your memory.
Glimpsing is not so obvious nowadays, but in this future, everything you look at will be recorded and replayed later, so you will be caught. If you have an affair, it will be easily discovered because everything is recorded. The detective's work would be greatly reduced.
Here is a memorable scene from the drama. The main character hires a babysitter. When the babysitter is not around, he makes a bad joke about his babysitter. Then later, he has a very embarrassing scene where his memory is replayed in front of that babysitter and the babysitter hears the bad joke he said. In such a future, there will be no such thing as private anymore.