Musa comes from a family of dhow builders. One day, he and his friend, Ahmed, watch a huge dhow slide into the harbour on a puff of air like a giant seabird. What mystery cargo does this ship of secrets bring from across the seas to Mombasa?. Musa comes from a family of dhow builders. One day, he and his friend, Ahmed, watch a huge dhow slide into the harbour on a puff of air like a giant seabird. What mystery cargo does this ship of secrets bring from across the seas to Mombasa?.