张万森（屈楚萧 饰）计划在高考后向暗恋已久的女生林北星 （张佳宁 饰) 表白，突如其来的演唱会事故却让一切变成了一 场无可挽回的悲剧， 没想到的是，痛苦无助的张万森竟意外重 启了这个夏天， 再次回到悲剧发生前的林北星身边，而重启夏 天的秘密，仿佛没有想象中那么简单……这一次，拼尽全力的 张万森能否成功守护林北星， 让所有刻骨铭心的遗憾都得以圆 满？星河流转中的某个瞬间，青春里的那场绵绵大雪，能不能 落在相爱的两人身上？

Zhang Wan Sen plans to confess his love to Lin Bei Xing, a girl he has had a crush on for a long time after the college entrance examination, but the sudden concert accident turned everything into an irreversible tragedy. Helpless Zhang Wan Sen unexpectedly restarted this summer, and returned to Lin Bei Xing before the tragedy. The secret of restarting summer seems to be not as simple as imagined...