To restore their family heritage. Pitch and Sabre have one mission in mind. To rehabilitate their forefather. The master of darks arts, Sombra.
However, they doubt that they only can make him good again as there’s more to him then they hoped. Namely, his first act upon freedom is to ensure the Crystal Empire with fear and kidnap Princess Twilight Sparkle.
While Canterlot watches the Crystal Empire intensively. Surely the famed Princess of Friendship can help Pitch and Sabre reform Sombra?