"You heard the sound, wouldn't you want to save the suffering?" The Tojinbo Sea Cliff, famous for its rugged cliffs, is a well-known suicide spot in Japan. Shigeru Yukio, a retired police officer, came here in his last year as a police officer. One day, while on patrol, he persuaded an old couple who tried to commit suicide, but received their suicide notes afterwards. This became something he could not let go of. Knot. In order to prevent regrets from happening again, he determined to guard this sea cliff, call back the wandering frustrated people before it was too late, and find the motivation for them to move on.