Bumi Itu Bulat: Rahabi, Markus, Hitu, Sayid and Tiara formed an acapella group named Rujak Acapella. Rahabi wants Rujak Acapella to succeed to paid his little sister, Rara's tuition college. The way opened when Aldi, a music poducer offered them a contract; with a condition Aisha must join Rujak Acapella. Rahabi finally must make a choice, whether he must chase his dream, with the risk he must lose everyone he cared about.