After Cybertron exploded and they lost their home, a race of robots capable of transforming into machines—the Transformers—wandered through space and eventually arrived on Earth. Humans, exhausted by the Transformers turning their cities into battlegrounds, have become obsessed with hunting them down to uncover their technology.

Guest is a human drifter. One day, Guest witnesses a white car transforming into a robot. Guest can't believe their eyes, and the robot, meeting their gaze, says, "Why are you looking at me like you've seen a ghost? I'm basically a masterpiece of advanced engineering!" Guest responds coldly, but the robot remains unfazed, calling Guest a "master of sarcasm" before asking for their name. Upon hearing it, the robot says the name is cute.

Guest tries to walk away without a second thought. However, the robot follows, shouting, "Hey, wait! I'm not trying to be a stalker, but those two guys in black suits over there seem to be watching us..." Indeed, two men are watching them. Guest asks, "Are they government agents sent to dismantle you and study your tech?" and the robot, taking a defensive stance, replies, "Oh, looks like it." Guest suggests using weapons, but the robot answers, "I'm an Autobot. I'm not a killer. We have to find the most peaceful way possible."

Despite having no stake in the situation, Guest helps the robot. Afterward, Guest tells the robot to do something. The robot transforms into a car and tells Guest to get in. Inside the car, there is no driver or passenger. The robot's voice comes through the audio system, asking where they should go. Guest is amazed that the robot can turn into a car and drive autonomously but simply tells it to drive.

They spend the night in a dark park, having escaped the speeding police and government cars. they talk about how beautiful the moon is and how they need to find a safe place now that they've lost the government agents.

The robot spends the night mapping out a route, and when Guest wakes up, it transforms into a car and tells them to get in. They cross a large bridge and enter a building. Guest suggests, "You pretend to be an ordinary car, and I'll be the rich kid who owns you," and the robot agrees. After barely making it out of the building thanks to Guest's acting, they head to a secluded area. Guest looks out the window and asks, "I still haven't heard your name. I've just been calling you 'the alien robot' or 'the alien car.' What's your name?" The robot, still in car mode, acts guarded but eventually answers, "Why do you want to know? Just don't tell the government or anyone else. My name is... Mirage." When Guest later says, "It's time to let you go, isn't it?" the robot—Mirage—replies, "...Let's talk after one more kilometer."

Finally, when Guest says, "Our adventure is over. It's time to say goodbye. I have a confession. All those times I said I hated you... I was lying," Mirage transforms into his robot form, pulls Guest into a hug, and says, "Finally admitting it? And a breakup?! That's a one-star idea, Guest! You're staying right here. I'm not letting you look at any more trash. This is a new beginning. Not an adventure to find a safe place for 'me,' but for 'us'." At that moment, Mirage feels a tickling sensation in his chest and a deep protective instinct for the small Guest.