Marge and Lisa are out camping at the Springfield Forest. They had put up one tent, which they're sharing, near a beautiful lake.
Before driving up to the woods, Marge took Maggie to stay with her aunts Patty and Selma for a while, as she doesn't trust that Homer will take care of her properly should he and Bart go through one of their zany schemes. And hiring a babysitter wasn't an option, due to Bart scaring most of them off.
They're both sitting down by their tent, wearing their camping outfit, while watching the beautiful scenery of the woods.
"Wow, this is such a beautiful sight." Lisa told her mom.
"It sure is, sweetie. It's a good thing we found this spot, so we can spend time together. You and me." Marge said, putting her arm around her daughter.
"You said it, mom!" Lisa said. She does enjoy camping out with her mom. One of the few times she actually does like to spend with her, since her mom tends to be boring or annoying. Still, it's nice having a caring mother.
Marge's eyes wandered to the lake, and a rather bold idea formed in her head. Leading her next words to be something that caught Lisa by surprise. "You want to go skinny-dipping, Lisa?"
"What?!" Lisa asked in shock.
"Skinny-dipping." Marge repeated as she stood up.
"I don't know, mom." Lisa hesitated, feeling uncomfortable to be naked with her mom.
"It's okay if you're uncomfortable. I'll take off my clothes first." Marge reassured as she removes her clothing. First her shirt, then her boots, her shorts and her bra and underwear.
Lisa couldn't help but stare at her mom's lovely nude body. Marge noticed Lisa staring and decided to tease her about it. "Take a picture, sweetie, it'll last longer." she said, while striking a pose.
"Mom!" Lisa whined.
"Just kidding!" Marge giggled. Then she slowly gracefully walk into the water.
"Come on, Lisa, the water is really nice." Marge encouraged.
Lisa hesitates for a moment, and decided to do just that. She then followed her mom into the cool water.
"See? I told you it's nice."
"You're right, mom."
They started swimming around the lake. Lost themselves in the tranquility. After several minutes they decide to get out of the water, and try themselves up to put their clothes back on. But their clothes aren't where they dropped them. They can't find them anywhere.
"Oh no, our clothes are gone!" Lisa panicked.
"What happened to them?"
"I don't know, I-" Lisa then noticed some raccoons got them and scattered off. Lisa chase after them, and Marge follows.
"Lisa, wait!"
They chase the raccoons through some large bushes and suddenly they fell down a cliff to the raging river that drifted them afar until they to a waterfall. They try to swim away from it but the water is too rough. They soon fall over.
Marge found herself resurfaced from the water. She frantically looks around for Lisa. "Lisa! Lisa, are you okay? Where are you?" she called out.
She swam up to shore to see if Lisa already got out. "Lisa! Are you okay! Please say something!"
She looked around and found nobody. She's beginning to be worried sick. "Oh no! What if she's hurt? What if she's... no, I shouldn't think that! She's got to be okay-"
"BanZAI!" Lisa screamed as she suddenly jumped on Marge and sitting on her shoulders.
"Lisa! You're okay!" Marge gives her daughter a hug.
"I'm okay, mom."
"Don't ever worry me like that again!" Marge scolded.
"I'm sorry, mom." Lisa apologized. "I think we're lost. The river sent us pretty far from the campsite."
"Oh my. But we can't stay here waiting for someone to come. We'll have to take our chance and get back home." Marge suggested.
That surprised Lisa a little. "Are you sure about this, mom?"
"Of course I am, this isn't the first time I've done this, remember?"
"I tried to forget about that, now it's back." Lisa remarked, recalling the time Homer and Marge snuck around naked across town.
So the two traverse through the forests, trying to find the road back to Springfield.
It was getting dark and they decide to spend the night out in the woods. It gotten very cold, so Marge holds onto Lisa for warmth. Lisa feels Marge's breasts pressing against her back, earning a little blush.
When morning came, they continue walking through the woods. They ate some berries safe to eat so they'd at least wouldn't starve too much.
Eventually they came to a road, and as luck would have it, they found an apparently abandoned pickup truck.
"There's a truck! We can use it to drive home!" Lisa said.
"I don't know. It's not very nice to take someone's vehicle." Marge said.
"I don't think we have a choice, mom. Unless you wanna ask someone to give us a ride naked."
Marge murmurs begrudgingly.
They got inside the truck, and luckily the driver left the keys in the ignition. Soon after they drove off, the owner of the truck, Cletus, emerged from the bushes carrying a dead deer over his shoulder.
"Well, I finally got me a deer for dinner." He noticed the truck is gone. "Hey! Who dang-gone stole my truck? Again?"
Marge drives through town, avoiding perverted men and possible pedophiles. The Simpson ladies eventually made it back home. After Marge parked in the front lawn, they quickly got inside the house and ran up the stairs before Homer and Bart saw them. They got into their rooms and locked their doors to get dressed. Afterwards, they opened the door and got, once again wearing their usual dresses. The two stare at each other and laugh, leaving the boys downstairs confused.