On Haeundae Beach, a guilt-ridden fisherman takes care of a woman whose father accidentally got killed. A scientist reunites with his ex-wife and a daughter who doesn't even remember his face. And a poor rescue worker falls in love with a rich city girl. When they all find out a gigantic tsunami will hit the beach, they realize they only have 10 minutes to escape. A woman named Yeon-hee (Ha Ji-won) lives in Busan with her boyfriend Man-sik (Sol Kyung-gu) near Haeundae Beach. But, when they find out a tsunami will hit the city, They realize they only have 10 minutes to escape!