Rangka Darma could constantly hear the humming while he lay on the lush grass, enjoying the morning light. He savored the lilt in the serenity of the surrounding nature, not wishing to know who it belonged to. Rangka Darma, who spends his life like moving water, finds joy in hitting river stones as he floats along with the current. Gisa Wijaya makes his life happier by living each day with the determination to live a long life. The girl who possesses the siren voice of her heart hears it every morning.