The young servant of the Light, Elvin, takes her mission to protect the planet and help people with a great sense of duty, and meekly submits to the strict Teacher, who completely controls her life. Since childhood, she has been deprived of freedom of choice, so even when the Teacher, without asking Elvin, betroths her to his beloved student, the girl accepts it. But then Elvin meets another of the Teacher's wards - the daring Liam, and they instantly fall in love with each other. This feeling awakens in her a thirst for freedom and a desire to be happy. But on the way to this happiness, she will have to face the anger of the Teacher, the pangs of conscience about the betrayal of her fiancé, and most importantly, overcome the immense sense of duty that constantly pulls her back.