Jack is a prince in a Kingdom nestled in the mountains, and he is well acquainted with his people and his life. However, he's definitely not ready to take over his term as the King yet. There's too much that he hasn't done yet, and even with the other Kingdom he's supposed to ally with his own through marriage growing frustrated and restless with their weapons, Jack refuses; girls aren't really his type anyway.
Mark is a solider for the King's army, and has been all his life. He is aware that the other kingdom is ready for war, and he is going to be the one to fight them. Even so, his general assigns him the role of persuading the prince into marriage by protecting him as he does what he wants, but always reminding him of his duties - an order that Mark ignores.
Only after they start spending time with each other do both men realize they found themselves in a situation much more than they bargained for.