They meet as children in school and Ngan falls instantly in love with her; he fights off bullies and she tends to his injury with some balm.

Their special friendship develops into their teenage years, with Ha Lan appreciating Ngan's music composition and guitar skills.

During one of their excursions, Ha Lan meets Ngan's cousin and housemate Dung, who is very outgoing and flirtatious.

Ngan acts as Tra Long's surrogate father, taking her to the city to see Ha Lan every so often.

When Tra Long is packing to go to university, she finds Ngan's music book in a keepsake box.

They go for a walk in the woods, at which point she asks him to sing the song he composed for her mother; he says that he does not remember it.

The movie has four songs composed by Phan Manh Quynh, including Có chàng trai viết lên cây, Từ đó, Tôi chỉ muốn nói and Hà Lan.

Có chàng trai viết lên cây was originally composed in 2016, but the lyrics have been adopted to the movie.

He and director Victor Vu invited the Bulgarian National Radio Symphony Orchestra to record this soundtrack.