The heroes and allies begin their training/Po, Lloyd and Omi side by side

Here is how the heroes begin their training in Son of the Overlord.

Meanwhile, Lloyd, Po, Omi, SpongeBob, Twilight, Laval, Gandalf, Emmet Brickowski, Wyldstyle, Batman, and their friends started training each other in order to defeat the Overlord's army.

Lloyd Garmadon: Coming right at you, Po!

As Lloyd strikes, Po used his silent fists.

Po: (dodging his attacks)

Lloyd Garmadon: You're getting good at this, Po!

Po: I have to say you did okay yourself, Lloyd!

Then, Po, Lloyd and Omi trained each other hard side by side.

Omi: I am mostly glad to train with my new friends!

Po: Me and Lloyd couldn't have said it better, Omi

Lloyd Garmadon: So, Twilight, what's the plan?

Twilight Sparkle: We just have to keep training until we have enough energy to stop the evil army.

SpongeBob SquarePants: Yeah, I just hope we don't run into Gorog.

Star Swirl the Bearded: And we will make sure of it, SpongeBob.

Trail Grazer: Star Swirl's right, what've we got to loose.

Laval: Let's do this!

Chase Young: Remember, always the techniques before the Shen Gong Wu!

With no time to waste, they kept on training as well as Po, Lloyd and Omi did side by side.