On November 30, 2016, Exo was confirmed to be releasing their fifth extended play and third special winter album, after Miracles in December (2013) and Sing for You (2015).
Pada 30 November 2016, diumumkan bahwa EXO akan merilis album spesial musim dingin ketiga setelah Miracles in December (2013) dan Sing for You (2015).