On a usual summer day, Hana and Doona head to a rock festival. Unable to afford tickets, they build a tower with odds and ends to catch a glimpse of the stage With the beat of the drum, joyous sound of crowds, and gentle breeze, Doona feels overwhelming sense of happiness in her heart. She confesses, “Hope we stay like this forever.” Hana replies, “I don’t think so.” Meanwhile, in the cosmos, a supernova explodes.