As the delicate fiber of time breaks and the clock rewinds, Kim Seokjin is repeatedly thrown back to the fateful date of April 11. Upon returning to Korea after two years of absence, Seokjin is tragically reminded of his once carefree group of high school friends. They were inseparable, the only light in each other's lives—until they went their own sorrowful, separate ways.

Finding Kim Namjoon in prison for assault, Seokjin learns the harrowing truth: Jeon Jungkook and Min Yoongi are dead; Jung Hoseok had a horrible accident; Park Jimin is missing; and soon, Kim Taehyung is found with his father's blood on his hands. But a serendipitous opportunity allows Seokjin to travel back in time and save his friends. Yet each time he takes a leap, reality slightly distorts—and Seokjin wonders if there will ever be a world where the seven of them can be happy together again.

Save Me was made in collaboration between Webtoon Entertainment and Big Hit Music. The series is a part of the BTS Universe, with the main characters being named after and representing the group's members. The webtoon expands on the story portrayed throughout BTS' music videos and other content, such as short films, booklets, and blogs. Its title references BTS' 2016 single "Save Me" from the album "The Most Beautiful Moment in Life: Young Forever." Save Me was published digitally in English, Spanish, French, German, Indonesian, and Thai by Webtoon Entertainment. The webtoon was featured in two Naver's Line Friends Store exhibitions on March 15, 2019, and March 22, 2019, in New York City and Tokyo, respectively; both exhibitions ended on April 18, 2019. Three members of BTS—Jungkook, j-hope, and Jin—appeared on Webtoon Entertainment's official Twitter and YouTube accounts for special reading and commenting on the webtoon from March 28, 2019, to March 30, 2019.