Cadance has just found out she is a distant relative to the Princess. She has just discovered her true heritage as a winged unicorn, but there is just a few problems. Cadance had has no clue how to be a Princess or control emotions
An idea from Twilight causes Cadence to get caught in a diaper, in front of her crush. Shining Armor is quite understanding however, he even agrees to "look after" Cadence.
Twenty years before the Elements of harmony, before Nightmare Moon's Return, Celestia started a whole new slew of problems and headaches for herself and the ones around her. Thankfully Cadence doesn't mind foalsitting.
An emotionally distant Celestia begins to reconnect with her ponies thanks to a young filly called Twilight Sparkle. (A Celestia adopts Twilight story)
Filly Twilight tries coffee when Cadance comes over to have a dinner date with Shining Armor. She finds out why they drink it, but also why she shouldn't.
Sometimes when you want to live up to your family's legacy, all you need to do is to look inside yourself and do what you think is right, with friends to help you find your way.