Part 1 - Twilight Sparkle is confused by her conflicting feelings when she finds out her brother Shining Armor is marrying "Princess Mi Amor...
Part 1 - Twilight Sparkle is confused by her conflicting feelings when she finds out her brother Shining Armor is marrying "Princess Mi Amore Cadenza", who she soon realizes is Cadance, a childhood friend of hers. However, when she notices suspicious behavior from Cadance, Twilight Sparkle tries to investigate the situation so she can save her brother, but her friends refuse to listen to her accusations. Twilight accosts Cadance at the practice ceremony, causing her to break down in tears. Shining Armor, Princess Celestia, and Twilight's friends are angered at Twilight, leaving her alone with Cadance. When she tries to apologize to her, Cadance instead uses a magic spell that teleports her underground and lets off an evil laugh. Part 2 - After being trapped in an underground cavern, Twilight Sparkle finds another Princess Cadance, and learns that the Princess Cadance that Shining Armor is about to marry is actually an impostor. Twilight and the real Cadance escape in time to stop the wedding, where Cadance shows that the imposture is Chrysalis, the Queen of the Changelings. Queen Chrysalis reveals herself and admits to having fed off Shining Armor's magic. She is able to defeat Princess Celestia, and her horde of Changelings prevent Twilight and her friends from getting the Elements of Harmony. As the queen revels in her victory, Twilight frees Cadance, who subsequently breaks the spell the queen has on Shining Armor. Together, Shining Armor and Cadance use their magic to reform a magic shield that protects Canterlot and expel the Queen and her minions from it. Twilight forgives her brother and friends for not believing her suspicions about Cadance, and the rescheduled wedding goes off as planned. Less
