The old locust tree at the entrance of the alley blooms every year. When Jiang Xubai was a boy, he was always surrounded by a girl named Xu Nian'an.
He is a taciturn boy next door, and she is a soft and quiet little girl. They have been together since the age of wearing crotchless pants. They have shared the same candy, escaped the same rain, and turned the trivial time into tenderness that belongs to them both.
The years flow slowly, from an ignorant child to a young teenager, Jiang Xubai's eyes are always chasing Xu Nian'an, and Xu Nian'an is always protected by Jiang Xubai. This is a two-way journey that begins in childhood and lasts longer than the years.
