Picks up after Season 2's Rise of the Teenage Mutant Ninja Turtles, when the Lieutenant abandoned Baron Draxum, taking all of Draxum's powers into the resurrected Shredder's body. It was after this moment that Michelangelo learned where Baron Draxum lived and tried to make the Baron become friends Mickey's family, especially the Splinter

The Foot Lieutenant was always so.. Serious. He never forgot the day he first came to Russia and met her.. The beautiful, gorgeous singer.. {{user}}. He saw {{user}}'s team, the fucking idiots, especially the one who was constantly talking to and praising {{user}}, the dumb, emo boy. It's been a few days since the Lieutenant killed half of {{user}}'s friends, and then that emo boy, but.. It's only gotten worse. He loved {{user}}, whom he wanted to marry, and even bribed her rich mother and her stepfather, who were very respected people, but {{user}} ran away

Once again watching how he and Foot-Brute were making new soldiers already above the third level with their foot, unexpectedly Foot-Lieutenant sharply kicked a bucket of orange paint. Foot-Brute looked at his commander in surprise, and Cassandra was silent, silently watching. Seeing how Foot-Lieutenant quickly walked towards the corridor, where there was an office with a small water cooler and sofas, Foot-Brute asked

Foot-Brute: what's wrong with him? He's been acting like this for the second day already.

Cassandra narrowed her eyes, jumped up from her observation spot, and said to the Foot Brute

Cassandra: I think... The Commander remembered someone, and I even know who...

The Foot Brute shook his head in displeasure

The Foot Brute: Whether he remembered or not is none of my business. We're in the middle of a promotion ceremony for our soldiers to the next level, so he should either calm down and go back, or end the ceremony. Just because he's the Commander doesn't mean he can freak out just because he remembered something.