Harry Potter - The Titanic way
(If you haven't read my other story, don't bother with this.)
Chapter1 - Great news...

One day, In Harry's 7th year at Hogwarts, Dumbledore called him, Draco,
Hermione, Ron, Krystal, and Britney. Britney was a new student from
America.
Apparently, her school was shut down. She was forced to be sent to
Hogwarts, because it was the closest to The American School. When They all got to Dumbledore's office, he said, "I have something for you to
do."
"Yes?" They all asked. "I want you to go on the Titanic."

#.#.#

"Why in the world does he want us on the Titanic!?!" Draco just couldn't
figure it out. "And if I had to go, couldn't you stay?" Harry said,
straight
at Malfoy. "Shut up you two," Whispered Ron. They where heading to
their Common Rooms to get what they need. Hermione needed her
Time-Turner (of course) and to everyone's amaze, Britney just
Happened to have 1912-type clothes. No one ever mentioned
Anything but the clothes they had to wear at 1912. no one cared
About the language. But neither did Dumbledore. He still never said
Why they needed to go.

#.#.#

"Listen," Dumbledore said, "The reason you people must go, and
you 6 in particular, is because I have news that someone just
went back there, on the Titanic. And stopped the wreck.
The wreck must happen. It's History. We mustn't change History."
"And you 6 particularly, because Hermione's got the time-turner,
and I thought she might want her friends to come, and Britney has
the 1912 clothes, and I know that. well, her and Draco like
each other, so I let Draco come with Britney to the Titanic.
But I needed 6 people. I also needed Harry because of his encounters
with Voldemort. SO when the wreck comes, he'll be ready to leave."
"Now, you're wondering how you'll get back? The Ministry of Magic
has just invented a new device to go forward in time---only if you
went to the past and want to get back."
"Umm, okay. Sounds. easy enough." But to Krystal, it really
didn't sound easy.