Haruka Nanase's new stage is Sydney, the place of his dreams that he once visited. One day while taking a short break before his departure, Haru has a chance confrontation with a fellow athlete from the All-Japan Invitational. Carrying all the feelings from those he's swam with in his heart, Haru takes his first step forward into a new world. Waiting for him there is the unmistakable champion, Albert Volandel. In the lead up to the Sydney tournament, all the competitors attempt to boost their morale. What is each competitor feeling, and what do they swim for, as they attempt to compete at the top of the world? Their passionate struggle against the water begins from here――！

Anime adaptation of Solomon arc of Fate/Grand Order video game. In 2015, the last era when magic was established. Chaldea, a humanitarian continuation guarantee agency established to prevent the decisive extinction of humankind, was observing a certain incident. The near-future observation lens Shiva has proved that humanity will be extinct in 2017. Chaldea identifies a singularity in space-time that is thought to be the cause of human extinction. Decided to perform a forbidden ritual, Rayshift, which turns the surgeon into a ghost and sends it to the past to restore humanity. However, at the moment of the Rayshift decision, the central monitoring room of Chaldea was blown up by someone, and the prospectus was blocked.

Part two of Fate/Grand Order: Shinsei Entaku Ryouiki Camelot - Wandering; Agateram; an adaptation of the the Sixth Holy Grail War, The Sacred Round Table Realm Camelot Singularity of Fate/Grand Order. (Source: TYPE-MOON Wiki)