A sidestory to I Against I, Me Against You.

Golden Heart's already messy family life just gets more complicated when her ex-husband Arcane Star suddenly and unexpectedly dies. Her ex-husband whose obsession with strange bipedal aliens that may or may not even exist had ruined their marriage. Now forced to face her own guilt, Golden's already strained relationship with her daughter Moon Dancer only worsens as everything begins falling apart at the seams.

Additionally, the more Golden finds out about Arcane Star's death, the more suspicious she becomes of the circumstances surrounding it. Between the huge cover-ups and impossible accounts of what really transpired, Golden Heart is forced to consider the possibility that Arcane Star's life's work wasn't just fantasy after all....

Edited by BradtheBrony

Cover art by Shinzakura

The TvTropes page

Everything changes for Twilight Sparkle and her friends when a mysterious extraterrestrial ship crash lands in Equestria. When Twilight messes around in the ship's systems with her magic, she ends up transported to an alien world unlike anything she imagined: a box canyon in the middle of nowhere.

To get home, Twilight must enlist the help of the eccentric Red and Blue soldiers that live there... if she can get them to stop bickering first! Additionally, she finds herself being pursued by the enigmatic military agency known only as Project Freelancer. Back in Equestria, all is not well for Twilight's friends as forces involved with the crashed ship make themselves known. Reds, Blues and ponies will all have to work together to discover the mysterious connection between Equestria and Project Freelancer.

A crossover with Red vs Blue. Written with the intention for the story to be followable without having watched the series. (just don't expect to get all the references).

Now with editors! BradtheBrony and Rough_Draft.

I made a blog post explaining things. You should read it.

TvTropes Page.