1000 years ago Princess Luna became Nightmare Moon, but was jealousy really the cause?

After winning the Best Young Flier competition, Rainbow Dash got to spend an entire day with her idols. With so much time to impress the Wonderbolts, why was Dash not invited to join the team? Did she screw things up, or is she just not good enough?

Sick in Canterlot hospital, Twilight reflects on her friends and everything they have done for her.