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!
While Korea is occupied by the Japanese Army in 1933, the resistance plans to kill the Japanese Commander. But their plan is threatened by a traitor within their group and also the enemies' forces are hunting them down.