JoJo and the Adinkroes

JoJo loves having fun and playing with his friends in the park, but one day, a strange thing happens that causes all of the schools and parks to close. JoJo is sad and wants to be happy again. After finding a special toy that transports him to the Motherland, he is, reunited with his grandad and given a bag of colourful jewels and a special message.

What did Grandad's message mean? Can the jewels really help JoJo to be happy again?