When 25-year-old Chen Nian was sorting out her mother's belongings, she accidentally discovered fragments of the star bottle that she had hidden in a camphor tree cave when she was 19 years old. The fragments actually triggered a space-time rift between reality and parallel worlds - on one side, the reality that her mother was trapped in the memory of the 19-year-old due to Alzheimer's disease, and that Lin Yan left Beijing and was never heard from again; on the other side, she pursued her to Beijing but drifted away from Lin Yan under the pressure of reality. The two worlds reflect the same regret like mirror images: unspoken confessions, unembraced family ties, and unreconciled selves.
As she shuttled through the cracks, she discovered that there were key clues hidden in the twilight of the 19-year-old: the swaying wind chimes in math class, the faded red rope on Lin Yan's wrist, and the white fungus and lotus seed soup stewed by her mother have all become tokens that span time and space. And the mysterious boy in school uniform, the broken glass that can reflect the third world, and the recurring double-moon phenomenon gradually reveal a cruel rule about "conservation of regret" - repairing the gap in one time and space will inevitably open a new wound in another time and space.
As the crack widened, her mother's memory began to wander between the two worlds, and multiple shadows emerged of Lin Yan's true identity. Chen Nian had to make a choice between "recovering love" and "protecting his mother", but when he put the fragments of the star bottle together, he was shocked to realize that the 19-year-old's unsent movie tickets, unfinished scarves, and unfinished letters had already been woven into a web in the depths of time, so that all "ifs" pointed to the same answer - growth is not about repairing the puzzle of regret, but learning to shake hands with regret and see your own starlight in the cracks of the twilight.
Intention: self-growth, making up for regrets, thinking about life