Harry Potter in fifteen seconds

I'm going with a group of co-workers to Harry Potter 6: The Half-Blood Prince next week. After talking with a couple of those co-workers, I realized that there are people who haven't read all the Harry Potter books several times. Shocking, I know. So as a service to those co-workers, and any one else in a similar situation, here is very brief summary of what's happened so far. (If you can spare more than 15 seconds, and you want at least a vague idea of who all these characters are, you should really read the fairly brief previouslys as well.)

Very Brief:
Previously, on Harry Potter...
Harry is wizard who makes friends with Ron and Hermoine. Voldemort is the bad guy. A teenaged Voldemort possesses Ginny Weasley (Ron's sister) and tries to kill a bunch of students, Harry saves everyone. Sirius Black, Harry's godfather, escapes from jail. (He was framed, so it's ok.) Voldemort finally gets a body, and tries to kill Harry. Another student is killed, but Harry gets away. Most people don't believe Harry about Voldemort's return, until Voldemort uses Harry to steal the record of a prophecy. Sirius is killed. Harry realizes that he must be the one that kills Voldemort.

Fairly Brief:
Previously, on Harry Potter...

Movie One:
Harry Potter lives with his horrible aunt and uncle. He is told he is a wizard, and that his parents were killed by an evil wizard named Lord Voldemort. Voldemort tried to kill Harry but was mostly destroyed, and Harry lived. Being "the boy who lived" makes Harry very famous in the wizard world. Harry goes to Hogwarts, a wizard school led by Albus Dumbledore. He also meets Severus Snape, the potions master and advisor over the evil Syltherin house. At school he joins the Gryffindor house and makes friends with Ron Weasley and Hermoine Granger. He makes an enemy out of Draco Malfoy, a student in the Slytherin house. Voldemort tries to come back to life using a magic stone, but Harry thwarts his plan.

Movie Two:
Ginny Weasley, Ron's younger sister, becomes possessed by an enchanted journal that used to belong to an old student named Tom Riddle. While possessed, she unleashes a basilisk (giant snake) in Hogwarts. It attacks several students, including Hermoine. Harry discovers he can talk to snakes. Tom Riddle turns out to be young Voldemort. (The letters in his name, Tom Marvolo Riddle = I am Lord Voldemort.) Harry and Ron save Ginny, Harry kills the basilisk and destroys the journal, and Hermoine gets better.

Movie Three:
A prisoner named Sirius Black escapes from wizard jail. He was accused of betraying Harry's parents, causing their death, and killing several innocent people. Harry, Ron and Hermoine are "captured" by Sirius with the help of Remus Lupin (a temporary teacher who was also friends with Harry's parents). Lupin is also a werewolf. Sirius convinces Harry that he is innocent, and reveals that he is his godfather. The real betrayer was another friend of Harry's parents (Peter Pettigrew), who has been in hiding as Ron's pet rat. Sirius stays out of jail, but Peter Pettigrew escapes before he can exonerate Sirius.

Movie Four:
There was a big tournament at the school. It was rigged (by bad guys) for Harry to win, and for the winner to be sent to a graveyard where the Death Eaters (Voldemort's followers) re-animate Voldemort. Harry and another student (Cedric Diggory) tied for the win, and were both sent to the graveyard. Voldemort killed the other student and tried to kill Harry, but couldn't because their wands share the same core (a pfenix feather). When joined in battle, this caused a reaction where all of the ghosts of Voldemort's recent victims came out of his wand momentarily. Harry managed to get away, with the help of his parents' ghosts.

Movie Five:
The Wizard government refuses to acknowledge that Voldemort has returned. Harry insists Voldemort is back- some believe him, some don't. Those that do form an organization called the Order of the Phoenix. Harry realizes that his scar allows him to see Voldemort's thoughts, and through this discovers that Voldemort is after something called "the prophecy." Harry and several students (including Ron, Hermoine, Ginny, Neville Longbottom, and Luna Lovegood) organize into what they call "Dumbledore's Army" where they train themselves on advanced defensive magic. Through his connection to Voldemort's thoughts, Harry sees him kill and attack several people. He thinks he sees Sirius (his godfather) in danger. He and several members of Dumbledore's Army try to save Sirius, but it was a trap. The group is met by several Death Eaters led by Lucius Malfoy (Draco's dad). They force Harry to retrieve "the prophecy," but are interrupted when several people from the Order of Phoenix come to rescue them. There is a fight and Sirius Black is killed by Bellatrix LeStrange, a death eater especially devoted to Voldemort who is also Lucius Malfoy's sister-in-law. In the fight, the prophecy is destroyed. The minister of magic sees Voldemort and is forced to acknowledge that he is indeed alive. Harry later learns from Dumbledore the contents of the prophecy: that either Harry will kill Voldemort, or Voldemort will kill Harry.

Hope that was helpful! Enjoy the movie!