Doc McStuffins S03 E36 Kirby's Derby

Sir Kirby dreams of winning the McStuffins Derby cup and Rose Crown against the Wicked King, Queen Amina and Dress-Up Daisy, but a mishap on Sir Kirby's steed Bonnie Blue (who cracked and lost a wheel on the process) nearly injures Bonnie Blue and caused Sir Kirby to feel guilty about her injury.