Bored, dreaming of a different life with adventure, success and family... Well, that's just around the corner, but the path to our dreams is never straightforward.

Nat lives a mundane and solitary life. Day after day, nothing changes; he wakes up, goes to work, eats, then sleeps—and it all starts again the following morning. Always he dreams of a better life and to find someone to care for and to love.

Then, one day, he finds Ruby Crab. She is a beautiful childlike creature made of pure ruby. She has been abandoned! A refugee, Ruby Crab exists in a society in which she does not belong.

After spending a lot of time together, they develop a loving father-daughter bond. Will the world continue to reject her existence? Will society accept their connection? Will their love for each other prevail in this world—or in another?