The sides: Queen Rhaenyra and Prince Daemon (Black) against the remaining Green garrison.

The dragons involved: Caraxes, Syrax, and the other Black dragons.

What happened: Daemon and Rhaenyra took advantage of the absence of Prince Aemond and Criston Cole (who had gone to Harrenhal) and attacked the capital directly. With the help of the treacherous Golden Cloaks, the city fell in a single day, King Aegon II fled in disguise, and Rhaenyra ascended the Iron Throne.