The Pre-Wedding Regret-Fulfillment Plan

The Pre-Wedding Regret-Fulfillment Plan Plot:

Su Xiao is just three days away from marrying Chen Mo, her boyfriend of three years. While sorting through old items, she finds an unsent letter from her first love, Lin Chuan: "The seaside sunrise we never watched together is my biggest regret." On impulse, she contacts Lin Chuan and they agree to go to the original seaside to "fulfill the regret." But when she arrives there, hiding from Chen Mo, she finds Lin Chuan already waiting with his fiancée—turns out the "regret fulfillment" is just his way to completely let go of the past. Meanwhile, Chen Mo discovers her whereabouts and is speeding towards the seaside...