Main characters

• Ioana Popa (Alina Eremia) is a student at a high school in Bucharest, Colegiul National de Arte (the National College of Arts). Ioana discovers that her boyfriend, Andrei, placed a bet that he would date her. Being extremely disappointed, she decides to join a music group formed by a teacher, Raluca. The group is named Lala Band. Ioana knew that her parents are Tănțica Cercel and Gică Popa, but, during the first season, Ioana discovers that she and Andrei were switched at birth. Therefore, her real parents are Mara and Sandu Anghel. She has a sister, Anca Anghel, whom she donated a kidney because Anca had a kidney failure.
• Andrei Anghel (Dorian Popa) is Ioana's boyfriend and a student at the same high school. He placed a bet with his friend Cristi, at the beginning of the year, that he would date Ioana, but despite the bet he really falls in love with her. He was raised by Mara and Sandu Anghel, but his real parents are Tănțica Cercel and Gică Popa. He has a stepbrother, Rafael Cercel, and a sister, Gio Popa.
• Anca Anghel (Cristina Ciobănașu) is Ioana's sister and Vlad's girlfriend. She had a kidney failure, but she gets healed when Ioana donates her a kidney.
• Vlad Stănescu (Vlad Gherman) is Anca's boyfriend. He lost his parents. In the second season, he is adopted by Mara Anghel so he won't need to stay in an orphanage. In the past, he had a crush on Ioana.
• Sara Năstase (Sore Mihalache) is Cristi's girlfriend. At the beginning of the series, she likes Andrei and tries everything to make him break up with Ioana.
• Cristi Alexandrescu (Raphael Tudor) is Sara's boyfriend. At the beginning of the series, he is rich and lives alone because his parents are working abroad, but later he becomes poor and loses his house. He moves in with the other members of the band.
• Monica Bora (Alexia Talavutis) is Dima's wife. She and Dima were expecting a baby before graduating, but she loses the pregnancy. In the fourth season, they decide to try having a baby again.
• Dima Trofin (Dima Trofim) is Monica's husband. He had been Sara's boyfriend.
• Sofia Drăgulescu (Gloria Melu) was Bubu's girlfriend but they broke up when she left the country to study in the United States. Now, she is dating Rafael Cercel.
• Bubu Grama (Mihai Cernea) was in love with Sofia, but they broke up due to her wish to study abroad.
• Liviu Teodorescu (Liviu Teodorescu) is one of the newest members of Lala Band. He was a contestant at "Vocea Romaniei" ("The Voice of Romania"). At first, the other members of the group don't want him in the band and they call him ironically "Liviu de la Vocea" ("Liviu of The Voice"), but later he gets in the band. He falls in love with Ioana.
• Dana (Ana Baniciu) is one of the newest members of Lala Band. She is in love with Rafael and Răzvan, but she doesn't know which one to choose.
• Rafael Cercel (Levent Sali) is Tănţica's son. During the first two seasons, he is in love with Sara, but in the third season, he gets in a relationship with Sofia.
• Andrada Rizea (Andrada Popa) is Anca's best friend. At the beginning of the series, she and Anca were enemies.
• Jenel Frumosu (Gabriel Ciocan) is in love with Dana.
• Răzvan Oprea (Costin Cambir) is Raluca's protege. When his father tries to kill all the members of Lala Band only because he wants to get to Raluca, he kills his father in order to protect his friends.
• Bogdan Cristescu (Mihai Mititescu) was in love with Anca. He was a drug-addict.
• Gică Popa (Radu Gabriel) is Andrei and Gio's father, Rafael's stepfather and Tănţica's husband. He is a policeman.
• Constanţa "Tănţica" Cercel (Elvira Deatcu) is Andrei's stepmother, Rafael and Gio's mother and Gică's wife. She later becomes a policewoman.
• Mara Anghel (Carmen Tănase) is Ioana and Anca's mother. She was married to Sandu Anghel. She adopts Vlad and a little boy named Mihai.
• Raluca Dumitrescu (Adela Popescu) is the music theory teacher at "Colegiul National de Arte". She starts a modern music club at the high school and forms the Lala Band group. She gets engaged to Tudor, a sports teacher, and, in the fourth season, adopts a little girl named Mia.
• Silviu Crăciun (Marin Moraru) is Ioana and Anca's grandfather.
• Zâna Crăciun (Teo Trandafir) is Ioana and Anca's aunt.
• Tudor (Radu Valcan) is Raluca's fiancé and a sports teacher. With Raluca, he adopts a little girl named Mia.
• Robert Călin (Răzvan Fodor) is the new director of the school and Raluca's ex-boyfriend.
• Vasile Popa (Ion Ion) is Gică's brother. He is also a policeman.

Past characters