Mobile Suit Gundam AGE Season 1 Episode 32

On their way to the Federation base of Roustroulam, the crew of Diva learns that one of their pilots Shanalua Mullen is a spy working for the Vagans. Kio is ordered by his grandfather to help defend the base against the Vagans, but he decides to go after Shanalua instead, wondering about the reasons behind her treason.