Karolina's Perfect Day (2018)

Karolina is a Croatian girl living in Subotica, Vojvodina. An outsider, she thinks that nothing is going her way in life, and thus fondly remembers one perfect day from her childhood when she had a 24-hour streak of luck. As the high school is nearing its end, a guy transfers to her class, Nikola, and she falls in love with him, yet Sladana, Karolina's friend, already set her eye on him.