As Chrysalis stood on a hill one of her commanders of the New Chrysalis Hive approached.

Captain Mandible: The Changelings are ready for battle. They're more deadly than before. I have the other commanders preparing for the attack.

Chrysalis: Wait until the signal and then we attack.

Captain Mandible: What if we don't see the signal? What's plan b?

Chrysalis: We conquer the rest of Equestria before marching on Canterlot.

Then after 2 hours of silence a green beam of magic shot up from Canterlot causing the Changelings to cheer.

Chrysalis: Are you ready my children?!

The Changelings cheer.

Chrysalis: Here comes the swarm! Attack!

The entire Changeling Swarm flies up preparing to attack. They descend towards the city and start searching. Chrysalis smiles but as she listens close she doesn't hear sounds of battle. Then a Changeling commander approaches.

Lieutenant Beetle: Mother we've searched the entire city but there's no ponies in sight. They've abandoned the capital and from reports coming from the other commanders in the other cities it appears that the ponies have fled.

Chrysalis: Tell them to do 5 sweeps of the cities and towns. No stone unturned.

Meanwhile.

On a train going to the Crystal Empire Twilight looked out the window and saw that the Changelings were descending towards Canterlot.

Twilight: Thank Celestia that we managed to flee before they got even close.

Back at Canterlot.

Chrysalis was strangling the spy.

Spy Changeling: Please I was sure that the city was packed!

Chrysalis: No more mistakes!

The Spy Changeling's neck is snapped and he falls to the ground lifeless with his brothers and sisters watching.