"Light to the Night" unravels a chilling 1997 mystery centered around the sudden disappearance of a father and daughter from Yuanlongli's elevator entrance. Tasked with their first professional case, an unconventional pair of detectives steps in. One is navigating a pivotal career change, contemplating his professional future. His partner, a recent college graduate, approaches this new world with an eager, naive curiosity. Equipped with a distinctive yellow-painted jeep and a resourceful makeshift excavator, they embark on an investigation far from ordinary. As they meticulously dig into the past, the duo unearths startling truths that extend far beyond the missing family. These profound revelations not only illuminate the perplexing case but also deeply impact and reshape the detectives' own personal lives, bringing an unexpected light to their interwoven destinies.