Belle, a high-class London escort, loves her job yet none of her family or friends knows what she does for a living. In this first episode, Belle talks about the rules to follow in order to be a secret call girl.

Belle is invited to the most prestigious adult party in the country, however her client doesn't want to join the action. So she tries to get rid of him just to engage with a couple she just met - however her personal life gets in conflict with that.

One of Belle's favourite clients has booked her for the entire night. However she feels bored when her client falls asleep and searches for a new adventure.

When a client, who is also her accountant, asks her to experiment with S&M, even Belle's eyes are opened!
Hannah's best friend, Ben, suddenly springs on her the fact that he is getting married.

Belle works for her favorite client together with another girl. When he dumps her for the new girl she's upset and calls Ben. He is still struggling from finding out about her secret identity.

After Belle gets a bad on-line review and barely escapes an encounter with a dangerous client, Ben suggests that she take a break and see what a normal life is like.

Belle has a couple as clients who want a foursome, so Belle has to find a man to help out. Belle's problem: she doesn't have that many friends she could ask for such a favor.

Belle is offered a once in a lifetime opportunity to become more than just a regular prostitute. However what effect will her career change have on her life?