In 2050, the Lost City was an absurd city. It's a world that's so beautiful that it makes people cry, but it's also confusing.

She is a young lady. He is a thousand-year-old turtle. She has always lived on land. He has been in the ocean all his life.

What was it that drove them to meet? What is the force that binds their lives? Is this a tragedy? A fable? Still is...... Will human beings be like him, thinking that the good times will never disappear, and will not miss them until everything is destroyed? Or do we make the right choice when there is still time to change our fate?