Pearl needs her merfriends' help when she's named Winter Princess and finds out she's going to be a big sister in this sparkling Mermaid Tales adventure. Pearl is over the moon when she gets the fin-tastic news that she's been picked to be the next Winter Princess She can't help gushing to Shelly, Kiki, and Echo about the beautiful dress she'll get to wear and how all eyes will be on her when she makes her big speech at the Winter Festival...