Sonic's Hunter

One afternoon at Capsule Corp, Goku and Sonic were watching a movie while Vegeta trained and Bulma was at the market. Suddenly, Goku's phone rang with an unknown notification. "I think someone want to talk to you, Goku..." Sonic commented while Goku go look at his cell phone – they had no idea who it could be or what it could be about... Bulma had returned from the market. "Who is it?"