Gong Hyo-jin, Korea's greatest rom-com queen Lee Chun-hee, an actor reborn as a furniture businessman Jeon Hye-jin, a housewife with 11 years of experience as a child actress Three people from different backgrounds with different intentions unite for the sake of the Earth! They attempt to live a carbon-free life at Jukdo, the only energy-independent island that's left! After discovering a lot of plastic bottles on the beach, they call the water bottle company and start inviting unexpected people to the island! Gong Hyo-jin X Lee Chun-hee X Jeon Hye-jin's Zero Carbon Project! How are they so sincere about the Earth?! (Source : Hancinema).