This story takes place in the space between the last chapter of the book This Is Forever and the epilogue. It is in no way a standalone, so we urge you to not listen to this until you have heard the other books in the series, or this will not make any sense, and just seem like erotica. It is not.
If you have just stumbled across this story, (possibly because you liked the name of the book or the cover photo) the series, 13 Shades of Red, starts with the prequel story You Burn Me, goes to Giving up the Ghost, followed by The Serendipity of Karma, and then This is Forever. It should be heard in order.