After ten years of hard work, Lu Jin was admitted to a top university with the highest score in the province, but at the opening ceremony, Cheng Ji said "I'm not worthy" in front of everyone and shattered all his pride. He turned around silently, no longer explaining; Cheng Ji lowered his head and clutched his school uniform tightly, his eyes red but he didn't dare to pursue him. As a classmate for three years, he blocked every bullying for him, and he helped him get through every night of questioning. But when fate tore open the class gap, the sentence "I'm not worthy" became the deepest barrier between them. It wasn't until the graduation party that Lu Jin read out the never-sent letter under the spotlight - it turns out that the most silent love is being willing to be the ladder for the other person, even if you can never reach the top.