Hello again! (wow 3 days in a row amazing) here's the next chapter! :D If anyone is actually reading this, here you go! Please review, it makes me happy!

They went back to the Tardis. When they got there, the Doctor immediately went into the library and got his super big book of space aliens. Maddy, Sal, and Liam got some big books and started searching too.

The Doctor flipped to the glossary. "Seekers…" he mumbled, running his finger down the page. "Aha! Seekers!" he read. The others turned to look at him. "See Chaos spirits." He turned to the page about chaos spirits. "Chaos Spirits are energy spirits. They live in between dimensions and times. They feed off the energy of people's emotions, thoughts, and feelings. They are very rare, because they fade away if they cannot get proper nourishment. They are often described as looking like a shadow or a ghost."

"Nothing about how to stop them." Maddy sighed.

"Oh yeah, I remember these things!" the Doctor exclaimed after a few moments of thought. "They are kind of important for Time Lords. Chaos Spirits are what happen when time travel goes wrong, or when there is somehow a rip in time or space. It's never happened before though."

"So what do we do?" Liam asked.

"I don't know," he said. "Time travelers are usually careful enough to not cause a rip in time and space. I guess this guy wasn't."

"This must be the contamination," said Sal. "Do you think a Seeker could wipe out the entire population?"

"I'm not sure. There are probably more than one though. It's unlikely that the rip caused by opening a portal into that man was so small only one could get through. Probably at least four or five?" he estimated.

"More Seekers," Liam sighed.

"What are we going to do about them though?" Sal asked.

"I don't think we can do anything right now," Maddy said. "It's been a long day. We should probably get some sleep and form a plan in the morning."

"Good idea."

The TimeRiders and the Doctor settled into the spare rooms in the Tardis. As tired as she was though, Sal couldn't sleep. She kept wondering whether they really had to fix the past. Why couldn't they just leave it this way? She'd seen how the world had gone. It was pretty bad. All the wars over dwindling resources, the major population growth, and the general ignorance and apathy over the state of the world. No one seemed to care anymore. She questioned whether it was really better to make history go back to how it was before. Who was even telling them what they had to do? Foster? He was gone.

Sal suddenly felt guilty. Foster had worked his whole life to keep this timeline. Another team had even died defending it. (Probably killed by Seekers, she thought grimly.) She had no right to change how it went. Especially since the time wave could change or even erase her family.

Sal went to bed. She could think about this more in the morning. It didn't matter now. She was in a cool time machine with a crazy, probably alien guy! What could go wrong?

With that comforting thought, she went to sleep.

Early the next day, Maddy was woken up by an excited Doctor running around in the hallways. She got up and asked him what was going on. He said he has finally found the Tardis's arcade room. He had always known she had one, he said. He just had never found it. Until now.

"Well, I don't mean to spoil your fun," Maddy said, "but it's really early in the morning, and there are more important things to worry about. Mainly, Seekers killing every human on the planet."

"Yeah, I know. But it's always funner to celebrate when things are going really badly. It makes things happier."

At that point, the Doctor's antics had woken up Sal and Liam. They groggily walked out of their rooms and into the control room, where Maddy and the Doctor were having their grim discussion. They turned on the TV. The news story was about the mysterious deaths all around the city. They turned it back off.

"So, what are we going to do about the Seekers?" Sal asked.

"We still don't know anything about them," the Doctor explained. "They have never been killed before. If they even can be killed. Can you kill energy spirits?" He trailed off, considering the idea. "No, that's probably not the right word."

"Could we go and stop the person from opening the portal?" asked Liam.

"No, we don't know where he came from. Or when." Maddy sighed. This was way harder than last time.

"They come through a gap in time and space, caused by a portal. Could we open another portal, and force them back through?" Liam suggested.

"That might work." The Doctor considered the suggestion. "But we would probably need to create another rip to get them back through. It could work though."

"Maybe if we forced more energy into the portal it would rip," Maddy said. "Send the Chaos spirits back to Chaos space."

Sal interrupted, "Um, guys, are we sure it's really a good idea for time to go back to normal? I've seen what happens in the future, and it's not good. Although I suppose it's better than no humans at all. But maybe if we just changed the future a little bit, so it would not go so badly."

"You've heard Foster," said Maddy. "For good or for bad, history has to go a certain way. Otherwise it could let out even more Seekers."

"Actually," the Doctor interrupted, "that's scientifically impossible. Changing the future doesn't open up a rip in time. I've done it plenty of times. And what this Foster guy says is not completely true either. Time can be rewritten. It doesn't have to go any specific way."

"But," Liam argued, "it's our job to make sure no one changes history and makes it worse. And all the humans being dead is definitely worse than wars or whatever else happens."

"Foster worked his whole life to keep this timeline," Maddy added. "Another team died to keep this timeline. We can't just change it. Their whole lives would be for nothing."

"Anyway," the Doctor interrupted, "I'm sure you'd all like to keep arguing about your job and history and cool stuff like that but right now there are more important problems. Like Chaos spirits."

That made everyone quiet.

"So, what's the plan?" asked Liam.

"I will go to the archway and open a portal," Maddy said. "I can put more energy into it and hopefully get it to rip a little. But not too much."

"We need to figure out exactly how many Seekers there are and where they are," Sal added. "Then we can lure them into the portal."

"The Tardis can probably do that," the doctor said. "There must be a foreign energy sensor or something somewhere that can sense Chaos spirits."

"Then we will need something to lure them into the portal," Maddy said.

"I can do that too," said the Doctor. "They want thoughts and feelings? I have a thousand years' worth. They can't keep away from that."

"Wait," Maddy stopped. "You're one thousand years old?"

"Yep. Well, give or take. It's a bit hard to keep track with all the time travel stuff."

"But –"

The Doctor cut her off. "There are more important things than my age to worry about right now. I can tell you that later. After we stop the Chaos spirits."

"Ok, but later I'm getting a full explanation."

"So," interrupted Liam, "Maddy is going to open a portal, and the Doctor will find the Seekers and lead them to the portal. What can me and Sal do?"

"Uh, you should probably both stay here with the Doctor," Maddy answered. "His part is harder and more things can go wrong. And I'll have Bob with me at the archway."

"Yeah," Sal agreed.

"Alright, so let's start with the Chaos spirit detector thing then!" the Doctor said. "Go see if there's a purple shiny wire in that box over there." He pointed and Liam started to search. "And, I also need a foreign energy detector. That should be down here." He walked under the platform into the Tardis's wiring. Liam continued searching in the tangled mess of wires that had been in the box where the Doctor had pointed. Sal went over to help him.

"Aha!" the Doctor exclaimed from below. He came back up to the main console. He set the huge metal thing down on the floor. "Haven't used this in ages. Any luck with the wire?" he asked.

"We can't find it…" Sal replied.

The Doctor walked over to the box and looked for a few seconds. Not seeing it, he went to the next cupboard over and opened it. A huge mass of multicolored ping pong balls fell out and all over the floor. "Whoops. Forgot I had that in here," he said.

He tried the next cabinet. Thankfully, this cabinet was well organized, and it took no time at all to find the right box and the connector cable they needed.

"Found it!" the Doctor exclaimed. "Wrong box. Sorry."

The Doctor connected the wire from the Tardis screen to the energy detector thing. It made a weird beeping sound, and the screen turned on. The Doctor turned some dials on the detector, and it started to buzz. He turned the dials back and instead pressed some buttons. This time it worked, showing a map on the screen. He flipped some levers, and pushed more buttons. The map descended to the area around Seattle. He pressed another button and the screen turned into a thing that looked kind of like a radar. The screen stalled for a couple seconds, then started to search.

After about a minute, the detector had searched the whole area. Everyone crowded around the screen. Four small dots indicated four Seekers. They were all spread around the area. Comparing the black radar map to a street map of Seattle, the Doctor found that there were two at Seattle Center, one in the Seattle Art Museum, and one in a place that from the map looked like it was just houses.

"In the most popular spots, makes sense," the Doctor said. "They are so spread out, I will probably have to go to them to get their attention, make them follow me."

"We will need to get a car or something," remarked Liam. "It's pretty far."

"Where are we going to open the portal?" asked Maddy. "Can't be anywhere with too many people."

"You should open it somewhere close to this one up here," the Doctor said. "It's the farthest away. And since it's in a residential area, there shouldn't be too many people there."

"How about here?" Maddy pointed to a street corner next to the location of the last Seeker.

"Great!"

"So I will open a portal there at 4:30 tonight. That sound good?"

"Alright. Now we just gotta get a car, and catch those Chaos spirits!"

"You should just get a car and keep it in the Tardis," Liam suggested. "There's enough room, so there is."

"How would it fit through the door?" Sal asked.

"That doesn't matter now," Maddy said. "He doesn't have a car. So we need to get one."

"Can we just take one? Or is that too illegal?" asked Liam.

"I have a friend who lives in Seattle," the Doctor said.

"I thought you had never been here before?" Maddy asked.

"They moved here. Anyway, I can probably get them to lend me their car for a day."

"Ok."

The Doctor picked up the Tardis's phone, and, after consulting the address book, dialed a number. He waited for the person to pick up. "Hello Magnus!" he said. "It's the Doctor."

"Oh! What's going on now?" asked the voice on the other end.

"I need to borrow your car for a day."

"Why?"

"You know, stopping monsters from destroying the human race. Same as always," he said.

"Alright. I will come and get you. Where are you?"

"I'm at –" he stepped outside to check, "the corner of Dexter Avenue and Harrison Street."

"Oh! I know that place. I'll be right there. 10 minutes." He hung up.

"I need to go back to 2001," said Maddy. "To open that portal."

"Alright," the Doctor said, "next stop, 2001!" He pulled a lever. The Tardis shook around some. Then it stopped. Maddy stepped out.

"Don't forget!" she yelled back. "4:30!"

"We won't," said Liam.

The Doctor pulled the lever again, and they went back to 1983.