2017. >> prince harry has announced his wedding engagement to american actress meghan markle. >> and the royal family welcomes meghan with open arms. >> the queen made an exception and broke from royal protocol and invited meghan to spend christmas with the royal family and the queen at sandringham. that was the first time a royal fiancee has ever done that before actually marrying into the royal family. >> a powerful sign the monarchy and the queen are modernizing and changing. >> the royal family now is trying to at least be much more reflective of society, and the queen first and foremost wants her grandson to be happy. >> and that happiness is something harry has been searching for most of his life. when we come back, the moment that changes everything. >> he didn't really deal with what life without her meant. it destabilized him and caused chaos for years.