Yeah, the first episode is a lot of talking, but what it comes down to is:
1. Mano Erina is a successful idol with a bumbling manager.
2. Her manager is actually a successful spy and she is her bumbling partner.
3. They get called into their handler's office to discuss a hitman who has been surveilling Mano.
4. While walking down the street, the two encounter the hitman...
5. WHAT WILL HAPPEN?????
Basically this episode doesn't get warmed up until about 3-4 minutes in. The second episode gets going a bit earlier, since it doesn't have to go through as much exposition.