Mortal Engines is what would’ve happened if John Carter (2012) had a love child with Jupiter Ascending (2015), and then the two superstars broke up. Jupiter no doubt would be left to raise their child alone. She’d do her best until Mortal, looking for the kind of validation and respect you can only find on the the streets, start getting into trouble. John’s returns to the family home would be met with a mix of hostility and incredulity by Mortal. Only after a protracted period of withering contrition are John and Jupiter able to reconnect with their daughter. It takes time but eventually they all reconcile, put their differences aside, and live happily ever after.