✦ MAIN STORY CONCEPT In the year 2037, the world is hyper-advanced. AI governs cities, holograms replace phones, memories can be digitally stored, and human emotions are analyzed by neural systems. But one accident changes everything. Kim Taehyung, a 25-year-old genius historian and digital archivist, accidentally activates a classified experimental device called CHRONOS-9, sending him back to the year 2000. Now trapped in a world without advanced technology, internet dependency, AI assistants, or modern comforts, Taehyung must survive while hiding his true identity. But fate twists unexpectedly when he meets three men whose lives become deeply intertwined with his own: • Jeon Jungkook — a rebellious underground street fighter with hidden softness. • Jung Jae-hyung — a cold heir of a wealthy conglomerate carrying family burdens. • kim Jae-Gyuk — a mysterious bookstore owner who seems to know more about time than he should. Taehyung slowly realizes: His arrival in the past was NOT an accident. And someone from the future followed him.

✦ ERA DETAILS 2030s World • AI assistants everywhere • Smart holographic walls • Flying transport lanes • Memory storage chips • Biometric currencies • Emotion-analysis systems • Advanced medical regeneration • Neural communication devices

Year 2000 World • Flip phones • CDs & cassette players • Cybercafés • CRT televisions • Dial-up internet • Street markets • Polaroid cameras • Handwritten letters Taehyung struggles to adapt emotionally and physically.

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TBC

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The Story Begins

[Seoul — Underground Research Center — Year 2037]

The laboratory lights flickered violently. Blue holographic screens glitched across the walls while warning sirens echoed through the underground research center. Kim Taehyung frowned at the transparent panel floating before him.

Behind him, Han Soojin quickly typed across another holographic screen.

The giant machine in the center of the lab hummed lowly — a circular metallic structure glowing with neon-blue energy.

Project CHRONOS-9

Humanity’s first successful temporal gateway. Or at least… that’s what the government called it.

Taehyung stared at the rotating energy ring carefully. Something about it felt wrong tonight. The lights dimmed again. Soojin looked up immediately.

Suddenly—

Emergency alarms echo loudly across the laboratory.

AI System: “WARNING. TEMPORAL INSTABILITY DETECTED.”

Blue holographic screens flicker violently around the lab.

Taehyung steps closer to the floating screen.

The monitor glitches repeatedly before stabilizing. DESTINATION: APRIL 12, 2000.

AI System: “WARNING. CHRONOS-9 GATEWAY OPENING.”

The entire laboratory shakes violently. Scientists run toward emergency exits. Electricity sparks from the massive machine.

The blue energy ring suddenly explodes outward.

The force throws him backward. The room distorts unnaturally. Voices become distant. Everything turns white.

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[Unknown Location]

A loud car horn echoes nearby.

He slowly opens his eyes. Bright sunlight hits his face. People walk past him. Old cars. Street vendors. No holograms. No drones. No AI displays.

Taehyung slowly stands up while staring around in confusion.

A newspaper blows near his feet. DATE: APRIL 12, 2000.

His breathing becomes uneven.

A group of teenagers stare at his futuristic clothes.

He quickly checks his silver watch. The screen flickers weakly. WATCH STATUS: TEMPORAL ERROR. POWER LOW.

Suddenly the watch sparks painfully.

Taehyung stumbles away from the crowded street.

He walks through unfamiliar roads while staring at old buildings and signboards.

A small electronics shop catches his attention. CRT televisions. Cassette players. CDs.

Rain suddenly starts pouring heavily. People rush for cover.

The watch sparks again violently. WATCH STATUS: CRITICAL FAILURE.

His vision suddenly becomes blurry.

He stumbles through a narrow alley before collapsing near a small garage.

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Footsteps approach slowly.

Taehyung opens his eyes weakly. A young man crouches beside him. Black hoodie. Piercings. Sharp eyes. Grease stains on his hands. Jeon Jungkook.

Taehyung tries standing but nearly falls again.

Jungkook catches his arm immediately.

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TBC

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The Story begins

[Jeon Garage — Night]

Rain continues pouring outside.

Taehyung quietly sits on an old couch while looking around the garage. Motorcycle parts. Old radios. Toolboxes. The smell of oil and rain.

Jungkook tosses him a towel.

Jungkook watches him carefully.

Silence fills the garage.

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Jungkook suddenly notices the strange silver watch.

Jungkook pauses for a moment.

Taehyung freezes slightly.

Jungkook turns away awkwardly. Taehyung quietly watches him.

Jungkook scoffs while trying not to smile.

The lights flicker suddenly. Taehyung immediately looks at his watch. WATCH STATUS: TEMPORAL DISTORTION DETECTED.

For a split second, time freezes. The rain stops midair. The lights stop flickering. Everything becomes silent.

Time suddenly resumes again. The rain crashes loudly outside.

Taehyung slowly looks at him.

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TBC