Ms. Hackney gets a headache and leaves the teaching to Starlight. She has to teach them about the prehistoric cave ponies of Pinto Cave and how a pulley works. The class are not taking their studies seriously, much to Starlight's chagrin. Starlight tries again and takes them on field trip to Pinto Cave. The class enters Pinto Cave, into a cavern where the cave ponies once stored their tools. To get out of the cave, Ace attaches a pulley to the cave ceiling and hoists all the ponies up. They return to school and Ms. Hackney is proud of Starlight and gives her an apple. Episode Song: "Lessons", sung by Starlight, Bright Eyes and Sweetheart.