This trick is called a Plastic Whip and it involves an element called Slack Style. To do this trick, you basically want to start with a breakaway throw, have it sleeping, and basically you want to carry the string over and have it slacked to the right side, and you whip the yo-yo with the string.
The string carries around your finger, it makes a loop, and that loop catches the yo-yo. From here you can do different kinds of slack tricks actually. That's one, you could do double, you could do triple, you can do four times but, I don't want to intimidate you with that trick. There's also different variations from the slack tricks you can do. From Repeat It, Reverse it, Double it up. So once again this is the Plastic Whip, and just different variations. And that's the Plastic Whip.