The MEGA Barbie Color Reveal construction sets hide fun surprises. The appearance of each small doll is a mystery waiting to be revealed. Start by opening the heart-shaped container and finding the 2 surprise bags. Inside, you will find 3 surprises, including a small Color Reveal doll. Fill the container with warm water, place the doll inside, and swirl it around to reveal its appearance. Then, dip the sponge in cold water to transform its look. Place the remaining items in the warm water to reveal more surprises. Next, set up the scene on the heart-shaped base, accessorize the doll, and start playing. Each series has a unique theme. These Color Reveal dolls have a summer theme.