Not the best work from Kenta Fukasaku. It may have its heart in the right place, but it still comes off as a rather cheesy vanity project that tries to sell its stars as much as it tries to highlight the dire situation in Cambodia. It's not completely terrible, but don't expect to see a quality drama here.
Kota has the feeling something is missing from his life. He's studying to become a doctor, but can't quite commit to his study. Then he learns about a project that helps to build schools in Cambodia. He convinces some friend to join him on a trip, after that they all come together to raise the money needed for building a school there.
Performances are rather weak, and the direction feels a bit cheap. It's clear that Fukasaku wanted this film to be all about the humanitarian aid given in Cambodia, but it's just not subtle nor captivating enough. Drama just isn't really the genre for him, best to keep this for when you're really in need of something sappy and sentimental.