Deep in an old alley late at night stands an inconspicuous secondhand shop.
Outsiders know it only as a place that buys old things. They have no idea that what the owner, Chen Yan, truly collects are the burdens people cannot let go of.
A cracked fountain pen, a yellowed old train ticket, a long-rusted key... Behind every old object lies a regret left unresolved.
Some people want to hold on to a memory that is about to disappear. Some want to hear an apology that came too late. Others want to find again someone they lost touch with years ago.
But Chen Yan knows that nothing in this world comes with a free second chance.
To hold on to something, you must pay an equal price.
And he keeps this shop for more than just business.
Years ago, he too lost someone, leaving behind an old regret he dare not face even now.
One old object after another arrives, and one unresolved fixation after another is laid bare.
Until one day, he discovers that the regrets of these customers are gradually pointing toward the same forgotten truth...