If you did not see the parallels, A Love for the Ages is a fictitious rendering of the true Gospel of the Lord Jesus Christ. Calvin represents Christ Jesus and Cassandra represents us.
No, it is not an exact rendering. For if it was, the King, Prince and Calvin would have been one and the same, but A Love for the Ages is meant to be more natural.
I hope the varied elements of the scenery did not cause you to miss the most unbelievable part, which is truly beyond our own ground-based points of view. For instead of just saying that He loves us enough to die for us, our Creator went ahead and actually did it by sending a full and equal part of Himself to suffer and die upon a cruel, cruel Roman cross so that we could spend all of eternity with Him in His Kingdom of Heaven as heirs to all that is His in glory.
All we have to do is want to truly be one of His children by faith, which includes truly accepting His only begotten Son, Christ Jesus, as our own personal Lord and Savior. Tragically, that is too much to ask of far too many. May you not be among them.