Three teenagers, Tomoya, Aoi, and Ryo, who meet online, are drawn together by an urban legend of a summer ghost who is said to appear when fireworks light up the night sky. Intrigued and seeking answers to their own respective struggles with life and death, they decide to set out to summon the spirit. Each bears personal burdens: Tomoya grapples with an uncertain future, Aoi is troubled by her family life, and Ryo is trapped by societal expectations. As they follow clues and gather courage, they prepare for the fireworks festival, hoping to meet the legendary ghost and uncover the truth about its connection to their unresolved issues. Their journey explores themes of friendship, loss, and the search for meaning beyond suffering as they each confront fears they've kept hidden.

As the fireworks light the sky, a mystical presence descends, leading them on a deeper exploration of the supernatural and their own hearts. The encounter with the ghost not only challenges their views but also forces each teenager to confront their pasts and choose paths forward. Mystical encounters turn introspective as a subtle blend of reality and the ghostly world reveal profound truths, leading to transformative self-awareness. Amidst the glowing ambiance of summer nights filled with hope and fantasy, the teens face pivotal moments that question if the bond between life and death can offer redemption or solace. Their midnight adventure near the ephemeral ghost creates pathways that guide them through life's uncertainties, forever altering their destinies as they grapple with what truly matters.