Snapchat, the app that lets you send pictures or videos that disappear after a couple of seconds, is getting into the mobile payment business.

It’s a peer-to-peer payment system called Snapcash. You can use it to send money to your friends.

All you have to do is enter your bank account information, type in a dollar amount and hit the green button.

What could possibly go wrong?

To announce its new partnership with mobile payment service Square, Snapchat rolled out a promotional video. It imagines what is going on inside your phone while you are using Snapcash as a Monopoly-meets-Emerald-City, Broadway-style crossover universe.

See for yourself: