Film editor Shen Yan unexpectedly enters a novel world, becoming the heir of the Shen family. Facing the upcoming flood, he refuses to sign the document shifting the blame for the pump station accident to engineer Xu Tinglan, only to find that the relevant determination has already been submitted in his name. To prevent tragedy, the two assist in personnel evacuation while tracking down the tampered records, gradually uncovering the truth behind the old case of Xu Tinglan's father. As the rain intensifies, Shen Yan gets trapped in the sluice chamber. Xu Tinglan and rescue workers search for a passage, and everyone joins forces to save him. Having experienced the test of life and death, Shen Yan also chooses to face past mistakes and assume his due responsibilities.