In shredder's training room Karai was looking at a picture of her mom and Lizzie was looking at a picture of her parents

Lizzie. We'll have our revenge

Suddenly they were ambushed by kraang foot soldiers. Karai and Lizzie fought back but the robots dodged every attack and grabbed both of them. Then the shredder walked in

Shredder: Enough.

The robots let go of Lizzie and Karai

Shredder: The Kraang swore that these new foot soldiers would be deadly. They were true to their word

Karai: I thought they would finish us off but you wouldn't let them do that right father?

Shredder: I am leaving for Japan to take care of urgent business. You are both not to make any moves against the turtles until I return.

Karai: But we told you-

Shredder: Disobedience comes with a stiff penalty

Karai: Even for your daughters?

Shredder: Especially for my daughters

The shredder walked away

Lizzie: when we take on the turtles on our own father will see he can trust us while he's gone

Karai: good idea and I have the perfect plan to do it

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The turtles found a mutagen canister in an abandon garage

MIkey: Oh yeah! Found it!

Leo: wait don't!

Suddenly all the garage doors closed shut then Lizzie and Karai showed up

Karai: Easier than I thought

Lizzie: you guys really are stupid

Leo: Karai! Lizzie!

Karai: it's been awhile Leo

The turtles were surrounded by kraang foot robots

Donnie: Your girlfriend is getting really good at setting ambushes.

Raph: Ha they're just foot soldiers. Won't even break a sweat.

Mikey: wait which one is Leo's girlfriend? is it Karai or Lizzie?

Lizzie: he was talking about me but I'm not his girlfriend

The turtles attacked but they started losing the fight

Leo: Everybody fall back!

Raph: What? We're running away?

Leo: It's not running. It's a tactical retreat. Move!

Mikey donnie and Raph were able to escape but Leo was captured by the foot robots

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Back at shredder's lair Leo was being kept in a cage surrounded by foot robots

Karai: You know I bet I'd make a small fortune if I sold you to a science lab. Could you imagine the press? Talking ninja turtle found in sewer

Lizzie: I say we take him down right now

Leo: Sweet. Captured and now totally humiliated. Awesome day Leo. Awesome day.

Karai: You deserve everything you're getting Leo. After you betrayed us last time.

Leo: you both have to listen to me! Splinter didn't-

Lizzie: I don't want to here anything you have to say! unless your begging for your life.

Karai snapped her fingering and all the foot robots sat on the floor

Karai: Don't you love it? Our new robotic foot bots follow our orders to a T. No arguing no prodding. They do whatever we want. Cool right?

Leo: Yeah convenient. Nice.

Lizzie: more like useful but not for you

Karai: we've been teaching the Foot Bots new skills but now we're turning the training over to someone new.

Lizzie: guess who it is

One of the foot robots let Leo out of the cage and Karai gave him is swords back

Karai: Foot Bots! De shell him.

Leo cut one of the robots in half them other other robots attacked

Karai: You spend years learning a fighting style and our robots learn it in seconds from you. Fighting just improves their skills.

Leo couldn't keep up and was pinned onto the floor

Karai: Lizzie told you that your master killed my mother and her parents

Leo got back but but the robots kept attacking him

Leo: that's a lie!

Lizzie: now your just pathetic

Karai: robots get him out of our site

The robots tied up Leo but then mikey Donnie and Raph showed up and set Leo free

Raph: You both got two choices Let us go or walk away from this inside a sandwich bag.

Karai: Sorry Raphael. Can't let you go. It's not really that personal with the rest of you turtles. we just need you for bait.

Lizzie: then shredder will take care of you

Leo: They want Splinter

Karai: Your sensei will eventually track you here, and when he shows up Splinter will know what it's like to truly suffer. Restrain them!

The foot robots attacked the turtles but they escaped again and robots followed them

Lizzie: I'm finishing this!

She grabbed her scythe and went after Leo

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On top of a building Leo took down more foot robots but Lizzie caught up to him and attacked him

Lizzie: I won't let you get in the way of my revenge!

Leo: Lizzie stop! The shredder is lying to you and Karai!

He tripped Lizzie

Leo: Splinter would never hurt an innocent. Your grudge is with me. Stay away from my brothers and my sensei. Understood?

Lizzie got back up but didn't say anything

Leo: believe me Lizzie

He threw a smoke bomb and disappeared

___________________________________

Back at the lair Leo went to talk to splinter

Leo: Master Splinter. I need to ask you some questions about Karai and Elizabeth

Splinter: It's late Leonardo. These questions will have to wait for another time.

Leo: Karai said you took her mother away from her and Lizzie said you took her parents. I know it's not true right?

Sprinter: No it is not true but the truth is almost as difficult.

Leo: Please sensei. Tell me. Trust me.

Splinter: Karai... is my daughter

Leo: ...if Karai is your daughter then what about Lizzie?

Splinter: she is not my daughter but I might have known her father