I cannot change my pedals because of a plastic cap

I cycle casually every day and I know at least something about bikes. But not that much that I know how to deal with the problem I experience.

Recently I got a new great bike (for me at least), but I noticed that the pedals were starting to get loose (issues with the thread). They are a basic plastic model, so I wanted to change them to something better.

Anyway, I got the new pedals and started working. I had an idea on how to do it, but after reading the instructions and an hour later I thought I was doing something wrong. So I watched a few videos on how to do it, and I was doing everything right.

Except this little problem…

The place where the Allen wrench should go, there is this plastic coin kinda thing, that very confidently says "made in china", that blocks the hole for the wrench (at least I suppose there is a hole for the wrench behind it). There is no point in telling about the bike because it was built in the local shop and the pedals don’t have a brand and it won’t help if I tell you the other parts.

So my question is, how do I change my pedals?

Any help is well appreciated.