Song (Sukrit Wisetkaew) used to be a boxer, but now he has become a teacher in a remote primary school in the dam area. The conditions in the school are extremely difficult, with no water, no electricity, and no signal. Song feels like he is living on an isolated island, very lonely. By chance, Song got a diary. The owner of the diary is Ann (Laila Boonyasak), who used to teach here. Ann recorded her teaching career here in detail in the diary. As time goes by, Song's desire to see Ann gradually becomes stronger. By chance, Ann returned to the dam area primary school, but Song had already left. Ann found her diary, but found Song's continuation in the diary. Song wrote all his joys, sorrows, and sorrows in the diary, and also expressed his desire to see Ann.