Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Very enjoyable

A city built far underground to survive the end of the world. After 200 plus years, the city is falling apart. Two teenagers seek to revive the city and uncover its secrets. A forgotten box holds the key to survival.Bill Murray is great as the selfish, corrupt mayor.Tim Robbins gives a small cameo performance.Martin Landau is riveting as the Doon's boss and mentor.Thoroughly enjoyable.