Watch Finnick for Free: How to Stream the Movie Online at 123Movies. . Not many people know that every house is secretly inhabited by little monsters! These furry creatures take care of a family’s house but cannot be seen. Finnick is a little monster, who doesn’t seem to care about his responsibility of making a home out of the house. But everything changes after a new family comes to his house. When Finn meets 13-year-old Christine, inexplicable events begin to happen in the city and life will never be the same again!