When Alex's obsession takes him to a strange town in South America, it is up to Liz and Bob to find him and bring him home. What they find when they get there is more than any of them could have imagined. Bob, still trying to wrap his head around all he learned about his his friend and the world around him last year, looks forward to a new adventure to take him deeper into this newly discovered reality. Alex quickly realizes that nothing is as it seems, nor is it anything like he thought it would be. He also soon learns that even he is not what he thought he was and that there was more to Liz's secret than she had let on. Will Liz be able to protect the ones she loves the most? Will they be able to find the answers and defeat the monster before it's too late?