A mysterious grifter appears on an isolated seaside estate claiming to be a wealthy family's new chef. When a plague descends on the island, the mischievous cook rouses his fellow staff to rebel and take over the mansion.
This is the backstory of Hana and Joon Seung, characters in the series "MARS" on Nat Geo. The twin sisters are struggling to fit into their new home and find a ham radio, allowing them to develop a friendship with a female astronaut..