The story of Silent hill 1 is somewhat complicated, first of all forget everything you think you know cause its false 😛. The game begins with Harry losing his daughter who he found on the road abbandoned so he took her in on his own and named her Cheryl. But Cheryl is actually Alyessa, the main "enemy" of the game, but shes actually not the enemy, yes she creates the monsters and all the fog and other world, but only to keep Dahlia from catching her. Dahila cant cross over the other world so she uses Harry to. Harry isnt a hero in this game hes more of a pawn being fooled with by both Dahlia and Alyessa. Dahlia knows why Harry is here to search for Cheryl thats why you get all these things in the game like telephone calls, her on tv, etc, is all just Dahlia trying to keep Harry advancing so he can find Alyessa for her, so Alyessa just creates more enemys and bigger and badder ones to keep him from her. Lisa from the hospital is not real if you dont know this, shes actually a monster/demon her self sugar coated to try to keep Harry at the hospital that is why after Dahlia catches Alyessa, Lisa snaps on you wiht her true form. In the end Dahlia tells harry that Alyessa is Cheryl they both have half the power to ressurrect Samael, the new baby The Alyessa angel gives to Harry in the end who you find out is Heather in silent hill 3.