The love song of first love

The story takes place in Dublin in the 1980s. Due to family adversity, his 14-year-old boy Connor (Ferdia Walsh-Peelo) had to transfer to a church school with extremely strict and rigid regulations. There, he got into trouble with the domineering and eccentric Barry (Ian Kenny), which shows that the future will not be easy. One day, Connor met a beautiful girl named Lefina (Lucy Boynton). In order to attract Lefina's attention, Connor invited her to star in the music video of his band. Unexpectedly, Lefina readily agreed. So the question became, how could Connor, who knew almost nothing about playing music, form a band in a short time? Fortunately, Connor had a group of friends who loved music, and soon a band called "Sing Street" was established.