|Ninjago: Masters of Spinjitzu|
|Once and For All|
Once and for All is the one hundred and twenty-seventh episode of Ninjago: Masters of Spinjitzu, and the twenty-ninth episode of season eleven.
Akita makes her way to the Ice Castle, using her wolf form to get past the Blizzard Samurai at the front gate. Inside the castle, Grimfax leads Lloyd and Kataru in an attempt to steal General Vex's dark ice crystal, which he fears will destroy any chance they have of sneaking up on the Ice Emperor. As the trio make their way to Vex's chamber, Akita heads for the throne room; meanwhile, the other Ninja and Krag are traveling to the castle in the Land Bounty.
The Ninja come in site of the Ice Castle, only for their passage to awaken Boreal, who swoops down on them. The Bounty's defenses prove to be no match for the dragon, who rips larger and larger pieces off the unusual craft in its attacks. Ultimately, Nya uses a massive chunk of its own ice as a ramp to launch the Land Bounty into the air, ramming into Boreal and slamming it to the ground. Inside the castle, Grimfax's party is intercepted by Vex and a party of samurai.
Kataru and Grimfax take on the samurai to give Lloyd time to face Zane, unaware that Akita has made her own way into the throne room. She comes within striking distance of the Emperor, only for Lloyd's battle with the guards outside to awaken him. The Ice Emperor knocks her back, and is about to freeze her when Lloyd enters to face his friend.
- The last line of the episode is the title, which is spoken by Lloyd.