This part of the play occurred in Elsinore Castle in Denmark. The King has died and they believe that they've seen his ghost. Later on Hamlet saw the ghost and confirm that it was his father. Hamlet learned that is uncle Claudius poisoned his dad and he has since married his mother.
"Take revenge for his horrible murder, that crime against nature." Act 1 Scene 5 Page 21
Hamlet wants to take action against Claudius. He is very passionate about killing him, but he deals with an internal struggle about the credibility of the ghost. Hamlet debates whether or not the ghost is actually his dad or a evil spirit. Hamlet also has to plan out his death carefully because Claudius is now the king and is guarded very well.
"The ghost I saw may be the devil, and the devil has the power to assume a pleasing disguise, and so he may be taking advantage of my weakness and sadness to bring about my damnation." Act 2 Scene 2 Page 48
Multiple characters are spying on Hamlet. Rosencrantz and Guildenstern, Hamlets old friends, are hired by the king to keep an eye on Hamlet. Also, Polonius is spying on him. Hamlet's girlfriend Ophelia, is now being rejected by Hamlet, which could be related to his whole blood thirsty act. Hamlet now is looking for his proof of Claudius killing his father. He gets his proof thanks to a group of actors that came to town. Hamlet had the actors in the play poison a king in the ear. This is because the ghost said he was killed this way. If the ghost isn't lying, according to Hamlet, when Claudius will react strongly to the play and prove that he is guilty.
“Your uncle snuck up to me while I was sleeping in the orchard, as I always used to do in the afternoon, and poured a vial of henbane poison into my ear” Act 1 Scene 5 Page 22
The play was accurate in what happened and Claudius left the play immediately. This gave Hamlet his proof. Hamlet was looking for Claudius, so he could kill him. He found Claudius praying, and decided not to kill him. Hamlet thought that if he killed Claudius in the act of praying that he might go to heaven. Hamlet then goes to talk to his mother and thinks that Claudius is spying on him behind a curtain. Hamlet stabs the curtain, because he thought he killed Claudius. He actually killed Polonius who was spying on him.
“I could do it easily now. He’s praying now. And now I’ll do it. And there he goes, off to heaven. And that’s my revenge. I’d better think about this more carefully. A villain kills my father, and I, my father’s only son, send this same villain to heaven.” Act 3 Scene 3 Page 68
Hamlet tells his mother Gertrude about how much he hates Claudius and how he is disappointed in her for marrying him. Due to Hamlet killing Polonius, Hamlet is sent to England. King Claudius has a letter sent with Hamlet that tells the King of England to kill Hamlet. Clever Hamlet escapes, and returns to Denmark. Ophelia during Hamlets absence is crushed by Hamlet's “death” and her father Polonius’s death. She ends up drawing herself. When Hamlet returns he is challenged to a fight with Laertes. Laertes is Ophelia's brother and Polonius's son, and he blames Hamlet for both of their deaths.
“And so I’ve lost my noble father, had my sister driven insane—my sister who once was (if I can praise her for what she once was, not what she is now) the most perfect girl who ever lived. But I’ll get my revenge.” Act 4 Scene 4 Page 91
Both Claudius and Laertes are ready to kill Hamlet. Laertes has poisoned the tip of his sword, and just in case he doesn't win Claudius has poisoned wine and is trying to make Hamlet drink it. Both of the plans backfire. Hamlet does not wish to drink and Gertrude ends up drinking the wine. Laertes was able to stab Hamlet, but then Hamlet is able to grab Laertes sword and stab him back. Hamlet realize that they were all poisoned and then makes the king drink the poisoned wine. Horatio is the only person that is left to tell us what happened. Unfortunately, the Price of Norway comes to visit and sees all of them dead.
“These corpses suggest mayhem. Oh, proud Death, what banquet are you preparing that you’ve needed to knock off so many princes at one stroke?” Act 5 Scene 2 Page 18