High school students Chi-Hyun and Myung-Soo always takes care of their best friend Kyung-Sook, who is terminally ill with leukemia. Kyung-Sook's last wish is to kiss his first love before he dies, but he has never experienced falling in love. For Kyung-Sook, Chi-Hyun and Myung-Soo look for a girl who could become Kyung-Sook's first love. By chance, they meet Kook-Hwa and they succeed in connecting Kyung-Sook with Kook-Hwa. But, Chi-Hyun becomes heartbroken watching Kyung-Sook and Kook-Hwa falling in love.

Step into HIGHLIGHT’s extraordinary 15-year journey as they bring their anniversary concert in Seoul to theaters worldwide. Experience unforgettable performances of fan-favorites like "Plz Don’t Be Sad," "BODY," "Bad Girl," "Shock," and "Fiction," all woven into a narrative that captures their past, present, and future. Relive the electrifying atmosphere, join the sea of LIGHTs and B2UTYs, and hear heartfelt stories shared by the members for the first time—bigger, bolder, and more vivid than ever before. 15 years of brilliance, and a new chapter ready to shine!

Kang Sunwoo, a former promising taekwondo athlete, now lives a life of poverty and exhaustion. One day, while carrying the weight of her painful past, she is suddenly thrust into the spotlight when people notice her uncanny resemblance to a woman named Han Jiyeon. The problem is, Han Jiyeon is the main perpetrator of a 'drunk driving hit-and-run death case' and also the heiress of a major conglomerate. As public anger and media scrutiny intensify, the wealthy family secretly searches for a body double to protect their granddaughter. Thinking of her worsening mother’s illness and her lost dreams, Sunwoo accepts the dangerous proposal in exchange for a large sum of money.