Try a simpler example.
The 2 of us are an economy.
You have $10, and I have $10.
I print $20 for myself.
The amount of goods and services in our economy didn't change, but you went from having 50% of the money to 25% overnight. While I went from 50% to 75%. i.e. I stole half your purchasing power. (This is the initial fraud/theft)
Now as I spend the money, prices start to rise simply because there is more money chasing the same amount of goods and services. (This is the Cantillon effect). If I don't spend the extra money, there will be no price inflation, just wealth redistribution.