Complex sentence: The movie also has a subplot involving the Christian Arab Issa, and the Crusader Louisa, who later marry each other, which Louisa choosing to live in Jerusalem with him as a nurse over continuing her life as a Crusader.
Split into simpler sentences: The movie also has a subplot involving the Christian Arab Issa, and the Crusader Louisa. They later marry each other, which Louisa choosing to live in Jerusalem with him as a nurse over continuing her life as a Crusader.