How far would you go for your one true love? Amidst an alien invasion, Mikako joins the resistance, leaving behind the young man she loves. As she travels deeper into space, Mikako's only connection with her boyfriend is through cell-phone text messages. The war rages on and years pass, but Mikako barely ages in the timelessness of space while Noboru grows old. How can the love of two people, torn apart by war, survive?