This week Pixie Lott, Matt Edmondson and The Next Step stars Shelby Bain and Isaiah Peck (aka Amy and Henry) are in the studio. Plus Jonny hangs out with a host of vlogging stars. Plus there's another brand new edition of The Next Step and cartoon action from Danger Mouse, Ooglies and Zig and Zag. And can any of this week's celebrities top the leaderboard when they take on the Push Off challenge?