The novel follows protagonist Prabir Suresh, who lives on an island in the South Moluccas with his biologist parents, who are investigating the unique evolutionary traits of butterflies on the island. As civil war erupts in Indonesia, Prabir and his baby sister Madhusree must escape the islands. When they grow up, Madhusree becomes a biology student, motivated to carry on her parents legacy in uncovering the evolutionary phenomenon. Prabir reluctantly follows her, as he must navigate and confront the truth that shaped his past.