"The big strings are noisy like the rain, the small strings are cutting..." Sui Yi, who had not finished singing the song, was surprised to see three thin scratches on the cover of the microeconomics book he just picked up from the table. Before he had time to think about it, a scream came from the corridor. Sui Yi quickly put down his book and ran out. Not far away, he saw a big golden retriever biting a thin boy lying on the ground. Students who heard the sound came out of the dormitory one after another. Sui Yi quickly ran over and worked with several boys to control the shiny and huge golden retriever. This golden retriever was raised by a boy in the dormitory on the same floor. He is usually very docile, so why would he suddenly bite someone? Black slowly covered the sun at a speed that was indistinguishable to the naked eye. The big golden retriever barked furiously again. As the sun becomes more and more covered with black and the sunlight decreases, plants on the earth are unable to carry out photosynthesis. Plants die on a large scale, food becomes more and more scarce, animals become more and more manic, and human survival will face an unprecedented crisis. In this troubled world, Sui Yi accidentally meets senior Feng Ming, whom he has had a crush on for a year. Can he seize the opportunity and successfully catch up with his senior while surviving?