From Makoto Shinkai (Your Name, 5 Centimeters Per Second, Journey to Agartha) comes the first feature of his career. In 1996, an enormous tower is constructed on the southern shore of Hokkaido, it's purpose-unknown. Curious, three school children make a vow to discover the mysterious tower's secrets. Will this promise have to be left unfulfilled when one of the three falls into a coma? Set in an alternate universe, this sci-fi story centers around three teenagers, a rip in the space-time continuum, and the perseverance to keep a promise against all odds. The film captures slice-of-life beauty between three friends, while epic events threaten to drive them apart.