Ariana “Ari” Gunderson and Matt Holt have been best friends since childhood. Both of their parents were best friends in the Garrison, so they were bound to always be together. They grew up together, Matt dreaming about going into space while Ari wanted to be a filmmaker. Then Katie was born, with a five year age gap between the duo. Everything was well, until Matt got into the Garrison and was sent on a mission to Kerberos with his father and Shiro. This was farewell… as they all went missing. Because of no news for them for two years, Katie decided to infiltrate the Garrison, looking for answers. When she was kicked out, Katie decided to enroll in the Garrison with a new identity. Ari, as the big sister for her, helped her, even giving her last name for her to use to infiltrate the Garrison. Ari never knew about the Holts for at least three years, too much time without them. Ari became a filmmaker, but never got over her father, MARCUS GUNDERSON, who died years ago after an incident in space