"Heat wave! The sun is fierce, and the city is limiting water use. Luz's favorite park is suffering in the drought, and now one seems to know how to help. Meanwhile, Luz and her friends try to beat the heat at the local swimming pond. But when they get there, they find is has been sucked dry by the factory nearby. Luz doesn't know how to save her two favorite places. But when she rallies her community, she discovers there's always a way."--bk. cover