Mari is a old friend of Shiro and friends with Pidge . Mari and Shiro were an unstoppable team , they were friends since grade school. When Shiro and Pidge's brother and father dissapeared , everyone thought that they were killed , but Mari thought something went wrong with their mission . A year later Shiro came back to earth and asked Mari to go with him to save the universe from Zarkon and his army . When Mari says yes to helping them save the universe, she finds it hard to connect to her past and help save the universe at the same time , then Shiro decided to help. Will Mari find out what happened in her past and where she came from . And will Mari find her self in love with Shiro or will Shiro fall in love with his old best friend?. And will they be able to save the universe from Zarkon? Based on Voltron season 1 and 2 .