Tad is a celebrity archaeologist and adventurer just like his hero Max Mordon... in his dreams! In reality, Tad is a Chicago construction worker. One day, however, he is mistaken for a real professor and takes his place on a flight to Peru in search of the lost city of Paititi.

In 1886, orphaned Irish siblings Mary and Tom arrive in New York City via ocean liner, and quickly find themselves on a wild, cross-country journey aboard a transcontinental 'Orphan Train', where they meet an extraordinary new friend who will change their lives forever.

The action continues from [REC], with the medical officer and a SWAT team outfitted with video cameras are sent into the sealed off apartment to control the situation.