OK - Here goes.
Lois is about to be attacked by Brutus when her son hurls a Piano at him and kills him. (More on that later)
Lois and her son are stranded on the ship.
Her fiancee flys his plane and lands in the water to save her.
The ship is then lifted by one of the continents and starts to break.
The ship starts to sink with Lois, Fiancee, and son in it.
Superman saves them, puts them on the plane and it flys back. (Lois is out cold)
Superman heads back to find Lex, not knowing that the island he is on is made of Kryptonite
Lois awakens and says that they have to turn around or SM will die.
Lex and his goons beat the crap out of SM, then Lex stabs him with Kryptonie in the back and throws him in the water.
They land the plane and Lois' son senses where SM is and they land. Lois jumps in and saves him.
She then removes the kryptonite from his back on the plane.
Superman goes back and shoots to the bottom of the earth, lifts up the continent and throws it into space.
In the process the Kryptonite makes him weak and he crashes into earth and lands in Central Park
SM is taken to the hospital where Lois visits him (when unconcious) and tells him that he is her sons father
He recovers and flys to Lois' house and then flies around some more.