Nico di Angelo had been shunned by his father, King Hades, for two years after he came out and told him he's gay. Since then, the young boy lived two years as a normal commoner, lying to others about others about whom he really is and where's he's been.
Will Solace, son of King Apollo, has live a normal life in the Sun Palace with loving and supporting family. He's never had to worry too much about what his parents thought of him.
Two years after Nico was rejected by his father, his older sister, Bianca, comes to him with news. She is getting married to Prince Will Solace and he's been invited back to his home palace to meet his soon to be brother in law. Nico agrees, for the sake of his sisters, to come home.
What could go wrong if he were to go home? The answer: Everything.
(Cover done by me, but no the art of Nico or Will. I wish I could make art like that though)