The Prince Took My Crown For His First Love, So I Left Episode 1

For ten years, Marina gave Prince Dorian everything: her loyalty, her love, even her crown. But when his first love returns, Dorian casts Marina aside and gives another woman her place. Then Marina discovers she is carrying his heir. For one fragile moment, she dares to hope their child might change his heart, until an "accident" at the royal blessing ceremony forces Dorian to choose between them. Who will he save?