>>110176343The whole thing is an attempt to give the Force a bit of mythology behind it, wrapped up in an allegory for the first two trilogies.
The Father, Son, and Daughter are the incarnations of the Force itself, the Dark Side and the Light Side, respectively.
They are extremely powerful beings who nonetheless are family and care about each other, deep down. This is meant to symbolize the fact that light and dark are interdependent.
Father wants Anakin, him being the chosen one, to take his place as avatar of the Force.
Anakin is thus at the center of a bit of a power struggle. Son wants to rule, to use his power and the Jedi's ship to escape Mortis and conquer the galaxy (despite their incredible power, none of the family are capable of hyperspeed) and Daughter and Father want to stop him, but are too passive to really do anything about it. This symbolizes the complacency of the Jedi compared to the effective ambition of the sith.
Son, in trying to take control, decides that he must murder Father. But while doing so, he kills the Daughter. This is analogous to the destruction of the Jedi Order
Father then kills himself so that Son will lose his power, and thus no longer be a threat to the galaxy. I think that this is supposed to represent the damage the Sith do to the Galaxy as a whole.
The Son is then killed by Anakin. This is analogous to Sidious - who was supposed to be the last Sith - dying in Episode VI.
Balance is restored, everyone involved with the whole affair is dead but Skywalker (and Obi Wan and Ahsoka, but shhhh). just like at the end of ROTJ.
The three of them then find themselves waking up on their ship after this adventure, with the planet nowhere in sight. This is basically there so that the galaxy-shattering revelations which occurred would not affect the rest of the story, as well as to give future Star Wars writers a way to ignore the episodes as if they never happened, should the force's lore need to be fleshed out differently.