Riley loves helping out at Universal Pet Resort, the best accommodation in the galaxy for weird and wonderful alien pets. With her mother stuck at the spaceport, Riley and her best friend Min are in charge. Their day is thrown into chaos when an important alien ambassador leaves her rare pet puffball in their care. Riley is delighted for the chance to show her mother how responsible she can be. But when two troublemaking aliens arrive, the puffball goes missing. Riley and Min must race against time to find and return the precious pet to its fearsome owner ' or face the consequences!