Complex sentence: Eun-soo (Lee Yoo-ri) is a positive woman who never loses hope even in the hardest circumstances but loses her memory in a car accident and lives as Yoo-jung, the wife of Jin-goo (Im Ho).
Split into simpler sentences: Eun-soo (Lee Yoo-ri) is a positive woman who never loses hope even in the hardest circumstances. She becomes an amnesiac after a car accident, and lives as Yoo-jung, the wife of Jin-goo (Im Ho).