I saw several reviews referring to drugs when it came to this movie. I don't indulge in those type of things but I did have a glass of wine to try and get into the headspace. This movie drags, tremendously. To me, and I'm not sure if it's right, but I believe this movie is about a murder, suicide that has taken place. I have no idea what the giant represents other than maybe the storm that was always heading their way and finally reached them towards the end of the summer. I assume the murderer is "Joe" but it could also be the main character " Charlotte". Who knows. Maybe I should have had 2 glasses of wine to understand clearly.