Diana Sydney's Rebellion was an event that occurred during Season One, taking place on the orbital space station known as The Ark. Former Chancellor Diana Sydney attempted to overthrow the Ark's government. To that end, she arranged for Bellamy to attempt the assassination of Chancellor Jaha. Later Diana leveraged the culling event to gain support among the working class. Later after failing to kill Chancellor Jaha and all council members during Unity Day celebrations, Diana and her followers takes over the exodus ship.