A group of boys and girls with different personalities met in the hospital because of serious illness. With the belief that "my life is in my own hands, not in the hands of God", Cheng Hui, who is experiencing cancer for the first time, and Lu Yuqing, who is a "sickly and good student", huddled together for warmth under the advocacy of Tie Ge, a "severe nail household", and defeated the disease with an optimistic spirit and a playful attitude. Even though they experienced great changes in their lives decades in advance, the teenagers infected the people around them with their unique youthful atmosphere and optimistic spirit - the cool and sassy female rogue Li Zong who suffers from ovarian cancer, the silent boy Tianran with autism, and Tangtang who became a vegetable due to fighting bullying... Looking for happiness in the bitter reality, and looking forward to a sunny day tomorrow with the company of youth.