Ninjago Movie 2: The True Potential (Under Editing) (Re-Write)

After the craziness regarding the release of Meowthra and Garmadon's redemption, the city has finally calmed down from everything. New changes had arrived to the city. Many of Ninjago City's citizens were subdued, understanding that many of them had hurt their beloved Ninja heroes in more ways than they expected.
But an urgent message has reached the Secret Ninja Force about a new arriving danger coming towards them. Their luck of irony has a knack for happening when they least expected it. The Ninja gladly accept the two mysterious Ninja with open arms as their new teammate and sisters. But little did one of them know, she had caught somebody's heart with her empathetic and mischievous self.

Disclaimer: Don't worry, I'm writing for fun. Movie-verse, but some things have changed; the Ninja's personalities are more show-based. The Ninja will resemble the original series.