Blondie comes home in the search of her friends. She has received a whatsapp saying they’re all shrunken down due to the shrinking virus. As soon as she enters home she finds them making a circle on top of the countertop so she could easily spot them.

Now that I’m a thousand times bigger than you I must reckon I’ve always fantasized on this...I’ve always wanted you to get the virus so I could...well, you.

That's how they knew their desperate call for help was a direct road to their doom by Blondie's desires.