One can tell something is wrong when Eun-su (Cheon Jeong Myeong) comes across a house in the middle of the woods that goes by the name ‘Home of the Happy Children’. 

Stranded the second day without a means of escape, he is duty bound to look after the three kids left behind by their awkwardly behaving parents.  Director Yim keeps the audience guessing at what the story is all about in his strange tale told in ‘days’ the protagonist is held unknowingly captive.  The one similarity to the Grimm fairy tale is the book the children keep in hiding.  Yim plays his dark tale with bright colours creating a wickedly sinister atmosphere by the use of various techniques as repetitive movement of toys/ornaments, nursery rhyme tunes, sounds, lighting and mostly his odd but effective camera tracking.  When you think the film is about to run out of ideas, Yim ups the angst by adding weirder and weirder occurrences into the story like the introduction of new visitors (the Christian deacon pedophile and his child abusing kleptomaniac wife). 

A sometimes brilliant script by Kim Min Suk turned into a deliciously wicked film with a surprising moving ending.