Before Mars (2016) is a Drama film that follows 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.. Before Mars is not currently listed with streaming providers in your selected region, but availability can change over time. It has a user rating of 8.2 out of 10 from 6 votes. Fans of drama movies may also want to explore similar titles below.