Note: I do not own any of the Ice Age characters. Characters not mentioned in the movies are of my own creation.

Chapter 1:

The herd moved down the path in front of them. They were headed south to avoid the oncoming winter. Sid was dragging behind as usual, keeping up his string of complaints.

"When are we gonna get there? My feet are killing me," Sid said.

"I wish that wasn't a figure of speech…" Diego groaned to Manny, who was beside of him. Manny looked at him and nodded in agreement. Manny looked behind him. Peaches had her trunk wrapped tightly around Manny's tail, and Ellie was doing the same to Ellie. Sid was mumbling to himself, complaining most likely. They all walked a bit farther and stopped in a clearing. Wasting a few minutes of sunlight was better than hearing Sid complain all day. Sid finally caught up, and sat down on a fallen tree. He sighed in relief as he lifted his feet off of the ground.

"Where are Crash and Eddie?" Ellie wondered aloud.

"Probably hurting some poor, defenseless animal somewhere" Sid said while rubbing his feet. Just as he finished, the twins popped out from the tree above Sid. They aimed their pee shooters and sprayed pee-sized rocks on Sid.

"OW OW OW! " Sid said as the rock shower continued on his head.

"Huh. You were actually right Sid," Diego said, smiling.

After the rocks ceased to fall, the twins gave each other knuckle bumpers before scrambling down the tree and onto Ellie's back.

"Okay guys, let's get going," Manny said. The herd all got up and got going once again. They walked on a little ways before Sid yelled, "My head hurts!" The group all groaned in unison.

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Whitney woke up slowly. In a sleepy daze, she looked around at her sister. She was the first awake, and decided to let her continue sleeping. She slowly un-wrapped her tail from the limb she had slept on, and scurried down the tree. Whitney scampered over to the berry patch a few yards away and began picking off the better berries. Chelsea had eaten all of the better ones at the last camp site. Whitney smiled to herself

'Revenge. I can't wait to see her face!' She thought, mischievously. Chelsea always wiped the berry bushes clean every morning before Whitney was even up. Well that wasn't going to happen today. Whitney dove into the plentiful bush. When she finally resurfaced from the inside of the bush, she looked over to where her sister had been sleeping. When she didn't find her, she looked around. She turned to the right and came nose to nose with Chelsea.

"Trying to hoard all the berries, are we sis?" Chelsea said smugly before popping a berry in her mouth. Whitney sighed in defeat.

"Pooey… let's get going I guess," Whitney said, defeated. Chelsea grabbed a handful of berries are walked out of the bush. Whitney had always been the more "mature" of the two. Chelsea had always been a pig of a opossum. They scampered up a tree and started running through the forest. If they traveled like this all day, they should be south by the end of the day. They swung through the trees swiftly, looking forward to being south.

"So, what are we gonna bet this year?" Chelsea said as they ran among the limbs. Whitney remembered how they always made a bet each year before arriving at the south forest. Whitney thought it over.

"Um, well… how about this," Whitney started. "I bet I get a better tan than you this year." Chelsea thought it over.

"Deal." She finally said. They stopped running and did their usual tail shake. They wrapped their tails together and placed one hand up their tails at a time. When Whitney reached the tip of their tails, they gave each other a knuckle bumper, and smiled.

"It's a deal then" Whitney said, satisfied. As soon as they un-wrapped their tails, Chelsea was knocked out of the tree by a small bundle of brown and tan fur. Whitney watched as her sister fell the short distance to the ground.

"Umph." Chelsea said as she landed on the ground. Whitney scurried down the tree and helped her sister up.

"What the –"Chelsea began. Suddenly two male possums dropped down from the trees.

"Ah dude, sorry about pushing you out of the tree." One of them said.

Whitney waved a dismissive had.

"Nah don't worry about it. It was pretty funny anyways." Whitney said, reassuring the two possums.

"Not so funny when you're the one falling out of the tree." Chelsea moaned. The other three possums laughed as Chelsea dusted off her red-orange and tan striped fur. Whitney held out a hand.

"My name's Whitney, and this is my sister Chelsea." The two possums shook her hand. One of them pointed a finger at the other.

"This is my bro Crash, and I'm Eddie" Eddie said pointing to Crash, then himself. Chelsea smiled at the two.

"Very nice to meet you two." She said, eying the two. "Are you guys, like, twins or something?" Chelsea continued. The twins looked at each other and then at Chelsea again.

"Duh!" They said sarcastically. Crash looked at the two girls.

"So what's the age difference here?" Crash said to the two.

"About 2 minutes." Chelsea said coolly. The boys looked confused. "We're fraternal twins, dude." She continued when the boys didn't get it. They looked like they got it.

"Ah, so that explains the color difference." Eddie said noting of Chelsea's red-orange/tan stripes, well as Whitney's blond/tan striped fur.

"Yep… so where you guys headed?" Whitney said.

"We're headed south with our herd." Eddie said.

"A herd of possums?" Chelsea said, confused. The twins looked at each other and smiled.

"Well it's not your… average herd." Eddie said.

"But if you consider 3 mammoths, a saber tooth tiger, 2 possums, and a sloth normal, then it's a normal herd." Crash said nonchalantly, studying his nails.

"Chelsea had her mouth wide open. Whitney rolled her eyes and used her index finger to shut her sisters mouth closed.

"Watch it sis. You may leak morning breath." Whitney said. Chelsea glared at her. She looked back at the twins.

"That sounds awesome!" Whitney said. "Would you mind letting us see your herd?" Chelsea finished. The boys looked at each other. Crash shrugged.

"Couldn't hurt." Eddie said. "Come one girls." Eddie said running up the tree.

"Cool!" Whitney said. She looked back down at Chelsea. "Don't fall outta the tree again, sis!" Whitney called. The girls heard the twins giggle as the four of them ran through the trees to the boys odd little herd.