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?!