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Year 2053, a girl continues to yearn the blue sea, which is full of childhood memories with her mother. Despite countless reasons not to, she finally decides to go find the sea with the help of AI.
Year 2053, the girl wakes to find herself in an abandoned subway station. There, she hears the story of an old station attendant waiting for a train that stopped running two decades ago…
Year 2053, weather caster Ki-young has to announce the same forecast every day. One day, he drops a bombshell statement during the live broadcast… "I quit."
The girl meets Ki-young on a bus to the sea and they finally arrive at the shore together. What has led them there? Will they find what they were searching for?
