Steven and Will are heading to Baker Beach. Steven on his bicycle, Will on his skateboard. Each with their Discman. It was the peak of summer vacation, and they wanted to get out of Steven's garage, where they spent a good part of their days disassembling and reassembling objects like radios, computers, TVs, and older things. Always with the hope of creating something that would transform the world, but up to that moment, no great idea had emerged.

They enjoyed Baker Beach for the view of the San Francisco Bridge. The architecture of that bridge fueled the friends' desire to create something grand in the eyes of humanity. Looking at that giant above the seas motivated their determination not to give up.

On the way to the beach, going down one of the city's many steep streets, Will, always very curious, sees the window of a pawn shop and is enchanted. Steven is also fascinated by the strange objects there, and the two friends enter to take a look.

The shop smells musty, and dust particles sparkle in the air, with the strong sunlight streaming through the window. The sunbeams meet a particular shelf at the back of the store, where two objects are alone. Clearly, the owner did not care about them, as they were the farthest pieces from the display. They were two different glasses, with large square lenses.

The boys point to the objects, and the old man in the shop lazily brings them over. The sun was strong, and they really needed sunglasses to go to the beach. These would do, although they didn't look much like sunglasses, but they weren't transparent lenses either. They must be some version of sunglasses, they thought.

The two friends asked the price, and the old man in the shop asked how much they had to pay. Steven and Will took out some coins from their pockets and placed them on the table. The old man took the coins and went inside the shop.

The boys put on the glasses and went down the street to the beach, sat on the sand, and, as they always did, looked at the bridge.

But something strange begins to happen. The minds of both of them started bubbling with ingenious ideas. Steven gets up, takes a small twig from a tree in the sand, and begins to draw an extremely complex mathematical equation. Will looks at it and completes the equation with his fingers.

They realize that the glasses have somehow made them much smarter. Without saying a word, they grab the bike and skateboard and head back to Steven's garage at full speed. There, they start gathering some parts and quickly develop a small device capable of opening a space-time portal and taking them to another era.

Steven is euphoric, and the first thing that comes to his mind is to go back to the day of the school's end-of-year dance when he said something foolish to the girl he was in love with. He knew what he should say to get her to go to the dance with him and wanted to correct it. It's as if the power of Noggles cleared his mind. He had the perfect sentence in his head. The sentence that would open that girl's heart to overwhelming passion. Will tries to convince him to forget about that girl, but, as a good friend, he supports him in the end.

Steven programs the device for the date of the party day, but his excitement makes him forget to enter the year. When Steven presses the device's button, a beam portal opens, and they enter the past. On the day and month they had programmed, but in a completely random year.

On the other side of the portal, they end up in a forest. At first, they think they have traveled in space, ending up in the Amazon Rainforest. They walk, exploring a way out. But little by little, they notice unknown large insects and some animals they had never seen before. Will questions Steven about the date he entered into the device. And Steven, always forgetful, realizes that he did not enter the year.

What it seems is that they are in a completely random year of history, probably a very ancient era.

We see a zoom out from the two friends and show the Earth completely untouched, without the presence of humans. Although Steven wants to go back to the dance day, Will wants to continue exploring that place. He was the more adventurous of the two and was fascinated by everything he saw.

A group of monkeys watches the two friends from a distance.

With Steven's insistence to return, Will decides it's the best thing to do because it's already getting dark. But when Steven takes the device to program the return, a monkey from the group steals it from his hand, climbs a tree, and disappears from sight. The two friends panic and start chasing the monkeys, who jump from tree to tree.

Literally, the two friends are in a race against time, in a era much earlier than the Stone Age.

They use the intelligence that Noggles provide to create a clever trap, capable of attracting and capturing the monkeys. The plan works. They manage to catch the monkeys and recover the device, but the trap couldn't withstand the monkeys' escape attempts and it breaks.

Steven and Will run in a frantic escape. The monkeys follow them and Will yells for them to go back home. Even while they are running, Steven manages to program the device, the portal opens, and they return.