Twilight Sparkle and Rainbow Dash work together to find the 5 sapphires that will cure Princess Celestia's Weakness before she dies, Luna opens a gate for them that leads them to a different dimension full of Ponies from the future. Celestia's strength gets weaker and weaker, But Twilight and Rainbow dash find the 5 Sapphires as quick as possible. Will they make it in time before Celestia dies? And what caused Celestia's sickness?