Dora's cousin Daisy is playing a soccer game. But when Daisy's team, the Yellow Tigres, has one player less, Daisy counts on Dora to play on her team, so she and Boots head to the soccer stadium to help Daisy.

Dora and her friends are about to put on a play about pirates for an audience of friends and relatives. But when the Pirate Pig and his Pirate Piggies steal the treasure chest with costumes inside, the group sets out to cross what's literally the Seven Seas and pass under the Singing Bridge to make their way to Treasure Island and get the costumes back in time for the show.