The LEGO Disney The Little Mermaid Story Book Building Toy with Micro-Dolls 43213 is a must-have for fans of Disney's The Little Mermaid movie. This set, based on the upcoming live-action film, features three areas: Ursula's lair with a folding shell throne, Prince Eric's library with a hidden book and map, and Ariel's cave with a revolving statue and key. With the LEGO Builder app, kids can easily build and explore the models in 3D. The lockable book can be played with on its own or combined with other LEGO Disney toy sets. It includes three LEGO micro-doll figures: Disney's Ariel, Prince Eric, and Ursula, as well as a Sebastian LEGO crab figure. With 134 pieces, this set offers limitless fun and creativity for children aged 5 and up.