The movie sets itself back in time around 6000 years ago, where everyone was in a war, and it rained this ash that could kill the Humans. The Ex-Machina destroyed the home of our main character Riku as he was a child. Riku managed to survive somehow after a massive explosion.
Years past by and a ton of his friends died, they blamed himself every time whenever they died and was quite emotional towards the death of his great friends that trust them with their life.
Riku then later on the movie found the Ex-Machina that destroyed his home and was shocked. She invited him to play a game of chess, which didn't show who won, but as we can assume that the Ex-Machina won. The Ex-Machina then joined Riku and wanted to know about "hear" and what makes the humans keep going even though they lost so much. Riku of course later ask the Ex-Machina for its name, and she is called Üc207Pr4f57t9, he asks again, and some names pop up and eventually she is known as Shuvi.
Fast forward in the movie: Riku and Shuvi make a bond that won't be quickly forgotten, while Shivu slowly learns about the human heart, Riku goes on his knees and proposes to Shivu. Shivu declines at first as she thinks it is impossible that a human and an Ex-Machina can stay together forever and be married. She further goes to say she destroyed his home, she did everything- yet Riku says something around the lines of that her past doesn't matter. She being here now and being with him in the future is what matters most to him, so he puts the ring and once more asks "Will you marry me?" she accepts, and they get married, which really beautiful. They would be known as Riku & Shuvi Dola, which is the last name of Corone- which is Stephanie's ancestor.
Then here we're at the end of the movie where everything matters, our main characters Riku & Shivu played around against the races and took them to the center to get the ultimate device, this is where the movie and everything gets emotional and sad, Riku is exhausted and tired of everything so far. Riku finally gets "a day off" as before Riku falls asleep he said how happy he met Shivu and how much he loves her. Riku falls asleep, and Shivu decides to go alone- outside. When we see Jibril go out and fight 1 on 1 against Shivu, where she says that Jibril wants Shivu's head as she's adorable.
Shivu warns Jibril, and she doesn't listen and where they fight in a largely heated battle where Shivu does her best to survive and live. When she was about to be beaten, she calls to the creator that Riku has completed her quest to know about the human heart, and as she is dying, the creator first declines then Shivu hesitates and explain her discovery. This gets accepted, and she gets in her super machina form where she battles Jibril as she got some seconds to live with this form. Jibril blasts her and defeats Shivu, Shivu is heavily damaged and barely fight back. She is lying there hopeless as she does one last thing before Jibril destroys her and that is sent Riku her wedding ring.
Riku realizes this and wakes up that Shivu is nowhere to be found and she has indeed died. He is completely lost and sad- he is broken and can give up once for a moment. He just lost the reason of him keep going of him keep fighting. Without that he doesn't know what to do anymore. Then one of the more advanced Ex-Machina arrives to give him the ring and Riku decides to give it one last go.
The plan has just started the giant bombs, and magic in one center make the ultimate device appear as Riku is about to grab it he can't manage to grab it as he gets mad over how many people died over gaining this device. Soon he attempts to take out his hand to take it, he slowly disappears and dies. He makes one last knee and prays to the god of games. He prays, and the god of games appears in front of him and makes his prayer come true.
Shivu's death and Riku's last stand was the saddest part of the movie, and I'd say this movie is pretty damn good and worth a shot. I think you should watch this movie as this movie is about the two most bad ass married couple who fought against the chance in a game.
The credit song was as well beautiful, I have to say there is no bonus scenes so you don't have to sit through the credit, but if you wish to listen to the beatiful voice then be my guest.
Review by LopousIMDb from the Internet Movie Database.