1984 年，香港仔華富邨曾經有 UFO 低空飛過的都市傳説，轟動一時。三個少年陳子健、何家謙、林可怡是當年的目擊者，隨著各人成長，性格迥異的三人都有著不同的人生軌跡。這時香港正經歷天翻地覆的改變，80 年代的希望，90 年代的浮躁，都落於千禧的蒼白裏。當三個成長夥伴再聚首，早已認不出自己，也早已認不出香港。受盡衝擊的他們不禁問，當年在天台看見的神秘光芒，到底是什麼？

Kam Muiday (Elaine JIN) has long been asking her granddaughter Sunnie Lam (CHUNG Suet Ying) to buy the same set of lucky numbers in each Mark Six lottery ticket for years. However, fate played a cruel trick. During the Lunar New Year’s "Snowball Draws", Sunnie was unable to place the bet, and that set of lucky numbers won a jackpot of HK$ 88.88 million. Not wanting to shatter grandmother's dream, Sunnie borrowed a villa from her filming colleague Jay Lai (Edan LUI), claiming that it was purchased with the winnings. Sunnie's father, Ken Lam (Jiro LEE), mother Charlotte Tong (Harriet YEUNG), and younger brother Harry Lam (LI Hoi Lam Marek), moved into the villa with her grandmother. Living together under one roof gradually healed their once-distant relationships and brought them closer. However, an unexpected incident ultimately revealed this well-intentioned "villa lie"...