It's apparent to me that the only reason they attempted the parents story was to make this series different from the first series. That's why they went with the whole "Untold Story" tagline, which funny enough ended up being a bunch of BS. They didn't even do anything interesting with the story either. It just comes off as being different for that sake alone. IMO, not a good way to start a series of films. Instead of being something that liberated the movies to a higher degree of creativity, they ended up trapping themselves into a corner--gotta resolve that parents plot.