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...

The weather caster struggles with his ongoing life and makes a drastic decision to quit.