Long after Spikes rampage in Ponyville the Equestria Superior Court orders Spike to pay for damages, Having no bits the mane six help spike dig up gems . An accidental trek into a dragons cavern (kidnaped) Spike & Rarity learn the harsh life and loves of Kull and Coaline his half breed daughter. They also dig up a little bit on dragon social behavior . You can find dragon bullies ,Dragon Belles and Pinkie being herself.
"We dragons though a noble race harbor a dark side, Slaves are made of other species and Some rouge clans still do eat ponies"
"Father, Is that what my mother looked like?"
and what do Strawberries have to do with the theme ?