In the four-part show, archival footage and personal videos and photos are intertwined with present-day interviews and scenes of the group embarking on their 2022 tour
The 38-year-old actor's parents published a 324 pounds advertisement in the marriages section of Britain's newspaper The Times, reports dailymail.co.uk.
The piece read: "Mr BT. Cumberbatch and Miss S.I. Hunter: The engagement is announced between Benedict, son of Wanda and Timothy Cumberbatch of London, and Sophie, daughter of Katharine Hunter of Edinburgh and Charles Hunter of London".
The couple first met when they both starred in "Burlesque Fairytales" in 2009. However, the wedding date has not been revealed yet.