The story begins with Lin Wan's childhood in Wangxi Town when she was six years old. After her father passed away, her life fell into trouble. Shen Yi, a taciturn outsider, pushed an old tricycle into the lives of her and her mother Su Man. From Wangxi Town to Yunli County, Shen Yi spent ten years silently guarding Lin Wan as she grew up, becoming an indispensable support in her life. He took care of her daily life, tutored her in her studies, and supported her dreams. After her mother Su Man passed away unfortunately, he resolutely took on all the responsibilities. He even sold the grocery store that had been rooted in Wangxi Town for many years and moved to Yunli County to start over again in order to take care of Lin Wan, who was in high school nearby.
Lin Wan grew up healthily in Shen Yi's silent but solid love, was admitted to university, and headed for a wider world. But after she left home, Shen Yi was shocked to realize that the protective love that had long been integrated into her blood had already transcended the boundaries of family ties and turned into unspeakable love.
