Half Magic is about four children who encounter magical coins, time-travel herb gardens, and other unlikely devices, is a warm, funny, original adventure. The "Half Magic" of the title refers to a coin that the children find. Through a comical series of coincidences, they discover that the coin is magic. Well, it's not totally magic--it's only (you guessed it) half magic. That means there's a certain logic to the wishes one must make to generate a desired outcome. Imagine the results emerging from inaccurate efforts: "half" invisible, "half" rescued, "half" everything!