The Un-Detective Agency

Leo and Luna leave Hidden Street for the first time to follow the signal. But as they get closer to the new location… strange things begin to happen.

The new signal leads to a real-world location far outside their city.Leo and Luna realize this mystery isn’t just underground anymore… it’s global.

A new signal appears—but this time, it’s not from their tunnels.Leo and Luna discover it’s coming from a completely different location.

Leo and Luna finally uncover the truth behind the mysterious structure. It’s not a creature… not alive… but something built long ago. A system that stores and sends information. But one question still remains… what is it connected to?

Now that they understand part of the signal, Leo and Luna face a difficult decision. Should they continue following it… or stop before it’s too late?

Leo and Luna finally decode part of the mysterious signal.But what they discover is more than just a message… it changes everything.

After hearing the old recording, Leo and Luna realize the danger is real.The Second Keeper returns—this time more serious than ever—and warns them that something is going wrong.

Leo and Luna discover an old audio recording hidden deep in the tunnels. It reveals something shocking—someone else tried to understand the signal before them.

As the signal grows stronger, Leo and Luna discover something shocking.The tunnels are no longer limited to their street… the map is expanding.

After responding to the signal, Leo and Luna notice something unsettling.The tunnels don’t feel the same anymore… something has changed.