In 2026, a new machine called the Augma is developed to compete against the NerveGear and its successor, the Amusphere. A next-gen wearable device, the Augma doesn't have a full-dive function like its predecessors. Instead, it uses Augmented Reality (AR) to get players into the game. It is safe, user-friendly and lets users play while they are conscious, making it an instant hit on the market. The most popular game on the system is "Ordinal Scale" (aka: OS), an ARMMORPG developed exclusively for the Augma. Asuna and the gang have already been playing OS for a while, and soon Kirito decides to join them. However, they're about to find out that Ordinal Scale isn't all fun and games.

The story of the film begins after the events of the second season, at the graduation ceremony of the third-year students. Knowing that the graduation of the third-year members means the end of u's, the nine girls take a walk around the school filled with memories. However, when the students attempt to leave the school gates, a single email is sent to them, and the curtain on a new story for u's begins.

Spring time in April and the last of the cherry blossoms are still in bloom. The usually aloof bookworm with no interest in others comes across a book in a hospital waiting room. Handwritten on the cover are the words: "Living with Dying." He soon discovers that it is a diary kept by his very popular and genuinely cheerful classmate, Sakura Yamauchi, who reveals to him that she is secretly suffering from a pancreatic illness and only has a limited time left. It is at this moment that she gains just one more person to share her secret. Trying to maintain a normal life as much as possible, Sakura is determined to live her life to the fullest until the very last day. As her free spirit and unpredictable actions throw him for a loop, his heart begins to gradually change.

Kyungcheon is a pianist-in-training who loses his heart and becomes a milk cow. He lives as a man during the day, but becomes a milk cow at night and eats grass. Meanwhile, with the help of wizard Merlin, a satellite named Ilho fell from the cosmos by a supernova, is transformed into a girl. One day, Kyungcheon is attacked by members of a secret agency that chases people who lost their heart. Kyungcheon defeats them with the help of Ilho. Following a narrow escape from secret agents, the two mismatched characters come to know about each other’s secrets and draw close.

Faced with the zombie apocalypse overrunning her town, Skye and her few remaining friends seek refuge in the only remaining house not swarming with zombies. However, when a zombie slips past and infects Skye, she must now fear her friends who see her as a threat along with the zombies fighting their way in. With only two hours before she turns, can Skye find a way to survive for her daughter’s sake or must she accept her fate?

Ksyusha barely remembers her father: he went missing when she was a child. Incredibly, he is showing signs of life, despite being in a coma. The man is returned home in this condition. His wife has now remarried. The family is thrown into disarray by the return of the former master of the house – terrifying things are happening in the house, and Ksyusha’s mom starts acting weird… Ksyusha begins to suspect that something supernatural, icy, and lifeless has come home with her father. And now Ksyusha and her stepfather are about to find themselves protecting their family from a demon.