Pirate Penguins and the Sardines of Doom

Paisley, Posso, Kelty and Spott have a new mission. Three baby polar bears have been kidnapped by the dastardly pirate Goldflipper, and it's up to Paisley and his crew to save them. At the same time, the waters of the far north sea are getting warmer and warmer, with terrible consequences, and nobody can work out why. Could there be a connection? There's definitely something fishy going on. Can the pirate penguins get to the bottom of it?