Pokémon GO can't be stopped and won't be stopped, because we gotta catch em all, and kill em all -- Team Rocket, that is. Now that April is here, Pokémon GO players have a slew of new challenges to face, including three Team Rocket Leaders, and the final boss: Giovanni.
Before you get to Giovanni, you need to know how to beat Sierra. To get to Sierra, you need to defeat six Team Go Rocket grunts to obtain the parts for a Rocket Radar. Then you can use this Rocket Radar to challenge one of the three Team Rocket Leaders, which where we'll find Sierra.
