The blog post on the website states the new downloadable content will see you going back in time to one of Adam Jensen’s earlier missions for TF29 that is set before the events of Deus Ex: Mankind Divided. The mission is to go undercover and infiltrate a high security prison to track down a fellow undercover agent – who has gone dark – to retrieve some sensitive information. The new content will introduce new characters along with already established characters from the main game such as Delara Auzenne. 

The blog post promises that Adam Jensen will need to confront a darker side before the mission is done.

The game will be released on Xbox Live, PlayStation Network and other online stores it will also be available as part of the season pass.