For over 50 years Taiwan's port city of Kaohsiung was an industrial powerhouse. But as industries flourished and the population expanded, unchecked urban growth soon led to severe air and water pollution. With the prospect of becoming nothing but an urban wasteland, the city authorities executes a remarkable recovery plan... utilizing green technology to breathe new life into Kaohsiung. Solar energy, methane gas and an unlikely hero - algae - are providing the city with cleaner means of producing electricity. Will these cutting-edge methods reverse its debt to environment and bring about its rebirth?