Timeline (Thai: Timeline จดหมาย ความทรงจำ) is romantic-comedy-drama Thai film created by Sahamongkol Film and this is a second episode of The Letter.

Tan (Jirayu Tangsrisuk) is a teenager who wanted to experience the outside world.

He lives in Chiang Mai with his mother but he is bored with his life, therefore he determines to study in Bangkok.

But Tan falls in love with June's sister, Orn.

She can't accept it because Tan and her sister are the one that she loves.