Matapos ang matamis na pagtatapos sa unibersidad, akala nina Carmelle at Anton ay sapat na ang kanilang pagmamahalan para labanan ang mundo. Ngunit ang realidad ay hindi isang simpleng musika. Nang makuha ni Anton ang kanyang pangarap na maging bahagi ng New York Philharmonic, ang distansya ay unti-unting naging pader sa pagitan nila. Habang nilulunod ni Anton ang kanyang sarili sa gilas ng Manhattan at sa mga bagong mukhang susubok sa kanyang katapatan, nanatili si Carmelle sa Pilipinas bilang isang dedikadong Music Teacher. Ngunit paano mo ituturo ang ganda ng musika kung ang sarili mong puso ay unti-unting nawawala sa kumpas?

"Sa bawat tibok ng puso, may kantang mabubuo." Set in Harmonia Academy, a prestigious performing arts high school, the story blends: - Musical performances - Kilig romance - Teen drama - Confessional-style storytelling (inspired by Pinoy Big Brother) At the center is Carmelle Reyes, the perfect student leader tasked with transforming the school's ultimate rebel Anton Villareal. But love? Complicates everything.

The story revolves around 2 students, Charm, the campus diva and famous for being an academic achiever and student government leader. And Antoine, the famous campus baddie heartthrob and the son of the Campus President. Will their paths cross?

Carmelle, a campus journalist. She's a bubbly, loud, and cheerful person, the personal sunshine of all the people she walks with. She was always easygoing and very light to be with, a kind girl to top off. Anton, a campus photographer, a calm guy, but also fun to be with and kind with everyone. He was best friends with Carmelle, always bantering, always fighting, but never had real heat to it. It's just something friends always do when it's platonic. It's just friendship right? Well, until Anton fell. He had a soft spot for her, and is willing to just be friendzoned when it means he can be by her side and make her laugh. •~ A sunshine, and a blue sky. ~•