Ah, I finally got around to typing up the next chapter! Yay!

First Rule: Check

Mrs. Weasley's first act upon seeing her two sons accompanied by a Merlin lookalike and a scruffy three-foot-tall barefooted person was to scream.

"Oi, Mum, calm down!" Fred attempted to placate her. "This is the wizard Gandalf, and this a hobbit named Frodo."

"AAAAAHHH!" Mrs. Weasley replied.

"Madame, if you would please settle down," Gandalf said gently. "We are travelers from another world known as Middle-Earth. We are in something of a predicament, the hour grows late, and we have come here to seek your counsel."

"...what?" Mrs. Weasley was taken back by this interesting announcement.

"We found this arch thingy while we were out, and it took us to another world," George simplified(?). "These two-well, more like Gandalf, really-told us this legend about different worlds coming together in their times of need to help each other or something."

"How does that make any sense whatsoever? That was the most pathetically dimwitted explanation I have ever heard," Fred informed his brother.

"Ah, now, it makes sense because it's so pathetically dimwitted!" George answered triumphantly.

"I just got a strange case of deja vu," Fred blinked. "Like in another reality, we've said something like this before..."

"What are you two going on about?" 9-year-old Ron padded into the room, stopping short at the sight of Gandalf and Frodo. "Who're they?"

"World-travellers," Fred told him.

"Ah," Ron nodded and went back to the realm of sleep from whence he came.

Mrs. Weasley closed her eyes and took a deep breath. "I'm not going to try and figure out what you two just said. You met these two people and want to help them with something. That's all my mind wants to know," she said.

"Okay! Come on, Frodo, Gandalf!" Fred grinned and pointed down a hallway to their room. "We have to start planning how you're going to defeat Sau-thingy, and I know just the book that can help!"

Location: Platform 9 and 3/4
Year: 2 (for Fred and George)

"How is this going to help?" Frodo asked, handing the Ring cautiously to the red-headed twins. They reminded him strangely of his distant cousins, Merry and Pippin, which probably wasn't a good thing. Last time he'd seen them, they'd set off a giant dragon firework.

"It probably won't," Fred shrugged. "But it's a rule not to do this in the Inofficial Rulebook of Hogwarts, so therefore we must break it."

George flipped the Ring into the air and caught it. The shiny object caught the eye of several Muggles passing by, and they stopped to watch as the whistling George walked over to the barrier between 9 and 10, waved at them all, slipped the Ring on his finger, and vanished from sight.

Panic ensued among the Muggles.

"I wonder if the Ministry can detect the magic of that ring," Fred mused.

"I wonder if the Black Riders can sense the Ring's presence here," Frodo said nervously.

Through the running Muggles and the confused railway officers, George came sauntering over. He returned the Ring to Frodo and grinned triumphantly at George. "Rule number one, 'You are not allowed to slip a gold ring onto your finger while simultaneously passing through the barrier to Platform 9 and 3/4'. Check."