Mapado 2: Back to the Island (2007)

Always looking to strike it rich, NA Chung-soo finally gets his chance. All he needs to do is find Kot-nim, the first love of a mysterious millionaire. He merrily treks down to Dongbek Island - the millionaire's hometown - but he and fellow traveler Gi-young, find themselves shipwrecked after a storm, waking up on a remote island. It's Mapado, the very island Chung-soo has terrible memories of.