The 10-episode anime series was set right after the in-universe 2020 Tokyo Summer Olympics where disaster strikes Japan.
Japan Sinks 2020 was an updated adaptation of Sakyo Komatsu’s 1973 bestselling sci-fi novel Japan Sinks, which has seen multiple adaptations in the past.
The series launched on Netflix worldwide on July 9 and was compiled into a compilation film that released in Japan on November 13, 2020.