In an instant, the Sun suddenly falls from the sky, plunging the Earth into pitch darkness and scaring Aya. On the fourth day of an endless night, she finds an unconscious man by the river. His skin is as hot and golden as the light from Aya's lantern. For her, this beautiful stranger becomes a source of inspiration and a mystery. He calls himself Sion. He's bleeding. His friends are the heavenly bodies. His enemies are the gods of the Moon. Aya and Sayon's attraction to each other becomes irresistible. The girl cannot believe it: she falls in love with the earthly god of the Sun. What will happen when his strength returns? Aya can also become immortal. Sayon won't let her take risks. Aya decides to follow her heart. She is ready to make any sacrifice, because this is the only way to make impossible love eternal.