Daddy does some whining at the front door, but it's not just because that's all he does: It's also so that the Doctor can sneak into the school and have a run in with five Veelas in their nightgowns. It's pretty cute, he's like so excited that he can't see them in the mirror, he is way focused on that, and they're like, "Dude, we are totally vampires, work it out." He finally does, showing them the psychic paper, which has become William Hartnell's library card -- cute! -- and then they get all hissing and scary and whatever. He yells, "Tell me the whole plan!" This gambit does not work.
Amy and the Doctor run into each other's arms and dance around, super queer as Rory watches, yelling about vampires. The Doctor's sort of a jerk to Rory, but that's nothing new. The Doctor decides they need to get into the house -- a place he just was -- but that for some reason this time it's going to take an incredibly complicated plan that it takes like half of the episode to discuss. They head over to Daddy's house, and he says that the House of Calvieri is like a fortress and you can't get in, even though they just got in.
This part I'm unsure about, plotwise, but the actual reason for the scene is so they can talk about Amy like she's not even in the room, basically whether or not it is meet to send her in like a Charlie's Angel and pretend to be a proto-Veela so that... Something, I dunno. A trapdoor is involved. Don't worry about it. There's a really cute moment where Rory realizes he's sitting on a ton of gunpowder, and the Doctor puts his hand on Rory's shoulder and plays it cool, and they are both neat. The point is that the Doctor and Rory both have ideas about Amy's safety, and Amy is a goon so she has no feelings about her own safety, so once again she'd be better off listening to the menfolk. And secondarily, the Doctor gets his way.