The Lesson tells the story of Zane, a devoted teacher mentoring the senior class in a Latvian high school. She tries to live her life in the most meaningful way possible. She takes her mission as a teacher seriously, and works hard to help her students develop their talents. Even so, as a younger teacher it’s hard for Zane to keep her distance from the class – the students soon become a sort of family to her. When she realizes she’s falling in love with one of them, the others start to feel left out. She faces a stark choice between personal happiness and the pressures of society.

Jaunā skolotāja Zane (Inga Alsiņa–Lasmane) cenšas sadraudzēties ar savu audzināmo klasi, taču aiziet par tālu – Zanes rīkotajās ekskursijās un mājas ballītēs pakāpeniski izzūd robeža starp skolotāju un skolniekiem. Kad viens no puišiem iemīlas Zanē, viņa iekļūst sarežģītā personisko attiecību mezglā.