Violet Lang calls himself the Prince of Speed and races across the Paldea region in search of the Herba Mystica that will give his Pokémon the ultimate speed. Scarlet Koito is a Treasure Hunter in search of the Treasures of Ruin. Together they are Scarlet and Violet, and ready to take on new adventures and challenges! Scarlet and Violet are contacted by Cassiopeia, who recruits them to join Operation Starfall. Their mission is to bring down and disband Team Star, a group of troublemakers considered to be the delinquents of the academy! Is Cassiopeia on the correct side?!