First, I'll do a quick mental check. I recall that "Merantau" is a 2009 Indonesian film starring Rizal Ramli, set in the 1980s and telling the story of Indonesian migrant workers. However, the addition of "LK21" is confusing. There's a site called LK21, which is a torrent site, but combining it with the movie title might not be appropriate. The user might be asking about the movie itself but got confused with the site.