The Summer Nights Monograph is a limited-edition companion to TWICE's 2nd Special Album, released December 31, 2018. It documents the production of the Summer Nights era — capturing the "Dance the Night Away" music video shoot, which was filmed on location in Okinawa, Japan, through exclusive behind-the-scenes photos. It includes a 150-page photobook and 9 signed individual member photocards — making it one of the few monographs in the series to feature signed cards, adding extra value for collectors. Like the What Is Love? Monograph before it, this release does not include a DVD, continuing the photobook-only format that carried forward through the rest of the monograph series.