1. Introduction
The LEGO Hidden Side Paranormal Intercept Bus 3000 (Set 70423) offers an interactive building and play experience that combines physical LEGO construction with augmented reality (AR) technology. This set allows users to build a detailed school bus and accompanying figures, then bring them to life through a dedicated mobile application to hunt and capture virtual ghosts.
This set includes 689 LEGO building elements, designed for ages 8 and up. It features a ghost-hunting school bus, a transforming portable toilet, and six minifigures: heroes Jack Davids and Parker L. Jackson, tech genius J.B., two haunted workers (Nanna and Bill), and the ghost dog Spencer.

Image 1.1: The complete LEGO Hidden Side Paranormal Intercept Bus 3000 set, showcasing the bus, minifigures, and the portable toilet monster.
2. Setup and Assembly
Follow the step-by-step instructions provided in the physical LEGO building guide included with your set to assemble the Paranormal Intercept Bus 3000 and its components. Ensure all 689 pieces are accounted for before beginning assembly.
2.1. App Download and Device Compatibility
To fully experience the augmented reality features, download the free LEGO Hidden Side app. The app is compatible with selected iOS and Android devices. A tablet or mobile phone is required for the full AR app play experience (neither are included with the set).
- Search for 'LEGO Hidden Side' in your device's app store.
- Download and install the application.
- Ensure your device meets the minimum system requirements for optimal performance.

Image 2.1: A smartphone displaying the LEGO Hidden Side app download screen.
3. Operating the Set and App
3.1. Physical Features of the Bus
- Pull-out Command Center: The rear section of the bus can be pulled out to reveal a detailed command center for the minifigures.
- Flip-out 'De-haunting' Cannons: The sides of the bus feature cannons that can be flipped out for ghost-hunting action.
- Rooftop Scanners: The scanners on the bus roof can be rotated to detect paranormal activity.
- Minifigure Seating: The bus interior provides space for up to four minifigures.

Image 3.1: The bus's interior command center, ready for ghost-hunting operations.
3.2. Transforming Portable Toilet
The included portable toilet accessory can be transformed into a ghost monster. Open the door, push down on the top to reveal sharp teeth, flip up its eyes, and attach the safety cone legs to complete the monster transformation. It can also launch brown disc projectiles from a slot in its center.

Image 3.2: The portable toilet in its transformed ghost monster state.
3.3. Augmented Reality (AR) App Interaction
Launch the LEGO Hidden Side app on your smart device. Point your device's camera at the assembled Paranormal Intercept Bus 3000. The app will overlay a haunted digital world onto your physical set, revealing hidden ghosts and interactive elements.
- Scan the Model: Use the app to scan the physical LEGO set. The app will recognize the model and bring it to life with AR effects.
- Ghost Hunting: Interact with the digital environment to find and capture ghosts. The app provides various challenges and mysteries to solve.
- Dynamic Gameplay: The app continuously updates with new ghosts, game challenges, and randomization to ensure a fresh play experience.
- Play as a Ghost: If you prefer, you can also play the app as a ghost through a series of short digital games, independent of the physical building sets.

Image 3.3: Interacting with the LEGO Hidden Side set using the augmented reality app.
3.4. Official Product Video
Video 3.4: Official product video demonstrating the LEGO Hidden Side Paranormal Intercept Bus 3000 (Set 70423) features and augmented reality gameplay.
4. Maintenance
To ensure the longevity of your LEGO set, follow these simple maintenance guidelines:
- Cleaning: Clean LEGO bricks with mild soap and lukewarm water (not exceeding 40°C or 104°F). Rinse thoroughly and air dry. Do not use hot water, harsh chemicals, or abrasive cleaning materials.
- Storage: Store your LEGO set in a cool, dry place away from direct sunlight to prevent discoloration and warping of plastic elements.
- Handling: Handle the set with care to avoid accidental disassembly or damage to delicate parts.
5. Troubleshooting
5.1. App-Related Issues
- App Not Detecting Model: Ensure your device's camera is clean and has good lighting. Make sure the entire LEGO model is visible within the camera frame. Check for app updates.
- Performance Issues: Close other applications running in the background to free up device resources. Ensure your device's operating system is up to date.
- Device Compatibility: Verify that your smartphone or tablet is listed as a compatible device for the LEGO Hidden Side app.
5.2. Physical Set Issues
- Missing Pieces: If you find any missing pieces during assembly, please contact LEGO Customer Service for assistance.
- Loose Connections: Re-examine the building steps to ensure all bricks are firmly connected.
6. Specifications
| Feature | Detail |
|---|---|
| Brand | LEGO |
| Model Name | Paranormal Intercept Bus 3000 |
| Set Number | 70423 |
| Manufacturer Part Number | 6250507 |
| UPC | 673419301312 |
| Number of Pieces | 689 |
| Recommended Age | 8+ years (96 months minimum) |
| Item Dimensions (L x W x H) | 21.26 x 11.1 x 2.32 inches |
| Item Weight | 0.1 Kilograms |
| Material Type | Plastic |
| Included Components | LEGO Building Elements |
7. Warranty and Support
7.1. Warranty Information
This product is sold with No Warranty from the manufacturer, as per the product specifications. Please refer to the retailer's return policy for any issues upon purchase.
7.2. Customer Support
For further assistance, missing parts, or general inquiries about LEGO products, please visit the official LEGO customer service website:





