Crusaders of the Lost Mark

"Crusaders of the Lost Mark" is the eighteenth episode of the fifth season of the animated television series My Little Pony: Friendship Is Magic. Written by Amy Keating Rogers, it is one of four musical episodes in the series, alongside "Magical Mystery Cure", "Pinkie Pride", and "A Hearth's Warming Tail". The episode aired on October 10, 2015, on Discovery Family. It is among the highest rated Friendship Is Magic episodes.. Its title is based on the 1981 film Raiders of the Lost Ark

The episode follows the Cutie Mark Crusaders as they continue searching for their cutie marks. They end up as the campaign managers for Pipsqueak, who is running for student pony president. Pipsqueak's opponent is the Cutie Mark Crusaders' longtime rival, Diamond Tiara. Diamond Tiara loses the election and is heavily criticized by her mother, Spoiled Rich afterwards, causing the Crusaders to sympathize with her. They then invite Diamond Tiara to their clubhouse and allow her to redeem herself. Diamond Tiara stands up to her mother and helps Pipsqueak rebuild the school playground. The Crusaders then agree to stop searching for their cutie marks and instead work together as friends to help other ponies understand their special talents, which causes the three to get their cutie marks together. They celebrate the accomplishment with their friends and family.