Akbo, a descendant of Divide (group thought divided), is the keyword that tells the truth of the world. Akbo tempts the Korean people to not sing songs with good messages. Wangga, Deoga, and Motga, three twin singers with a strong charm, are a mixed group of singers who dream of a world with good messages. They sing songs that hope for and emphasize a beautiful world, hoping the world will be peaceful with their songs. The three Akbo siblings, who are the composers, arrangers, and scriptwriters, tempt Wangdeumoga with a contract at their entertainment company and a huge sum of money to sing songs that oppose good. Will Wangdeumoga sing the promised song of evil at their last concert? The contracted final performance is approaching, and Wangdeumoga's amazing songs in the world bear fruit as a good positive ripple effect. The reason is that Wangdeumoga deceived the three Akbo siblings and ended up singing a song of good. The betrayed Akbo siblings disappear as their existence is overcome by good.