Tells the story of Justin Bieber, the kid from Canada with the hair, the smile and the voice: It chronicles his unprecedented rise to fame, all the way from busking in the streets of Stratford, Canada to putting videos on YouTube to selling out Madison Square Garden in New York as the headline act during the My World Tour from 2010. It features Usher, Scooter Braun, Ludacris, Sean Kingston, Antonio "L.A." Reid, Boyz II Men, Miley Cyrus, Jaden Smith, Justin's family members and parts of his crew and huge fanbase in a mix of interviews and guest performances.
| Actor | Role |
|---|---|
 Justin BieberSelf | Self |
 Nathan MorrisSelf - Boyz II Men | Self - Boyz II Men |
 Wanyá MorrisSelf - Boyz II Men | Self - Boyz II Men |
 Shawn StockmanSelf - Boyz II Men | Self - Boyz II Men |
 Miley CyrusSelf | Self |
 LudacrisSelf | Self |
 Jaden SmithSelf | Self |
 UsherSelf | Self |
| DDiane DaleSelf | Self |
| BBruce DaleSelf | Self |
 Ryan GoodSelf | Self |
 Allison KayeSelf | Self |
| CCarin MorrisSelf | Self |
| SScrappy StassenSelf | Self |
| KKenny HamiltonSelf | Self |
| MMama Jan SmithSelf | Self |
 Jeremy BieberSelf | Self |
 L.A. ReidSelf | Self |
| RRandy PhillipsSelf | Self |
 Snoop DoggSelf | Self |
| RReginald JonesSelf | Self |
 DJ Tay JamesSelf | Self |
| MMelvin BaldwinSelf | Self |
| DDaniel KanterSelf | Self |
| TThomas MartinSelf | Self |
 Bernard HarveySelf | Self |
| DDominic ManuelSelf | Self |
| DDelfin LazaroiiSelf | Self |
| CChristopher AbadSelf | Self |
| MMicah TolentinoSelf | Self |