Author's note: Here's the fourth chapter, it's going to be taking place in the lab before Donnie leaves the lab and after leading up to where we left off last chapter. I don't own T.M.N.T at all.

Donnie finds out, Splinter tells Raph and Mikey-

****Five minutes before Donnie leaves the Lab***

Splinter watches as his young smart son works on his computer trying to hack into Shredder's computer. He is sitting close to his two unconscious sons looking over them.

"I found it Sensei." Donnie tells him, before his eyes widened as he read the information he found.

"Donatello? What is wrong my son?" Splinter asks worriedly.

"Well you see Sensei; it appears that they were hit with a serum that was made to change whoever is injected with it into the opposite gender. Shredder apparently wanted it tested on two of us."

Splinter's eyes are wide as he looks from his smart son to his two sons that were injected with the serum. "How long until the effects kick in?"

"I'll give it about an hour or two…..uh can you stay in here in case they wake up? I need to go tell the others and I think it would be best if you tell them." Donnie looks at him nervously.

Splinter smiles kindly, "Of course, now go on."

Donnie then exits the lab and Splinter sits down to wait, for Raph and Mikey to wake up.

**1 minute after Donnie leaves**

Both Raph and Mikey wake up at the same time. They groan as they do and Splinter rushes over to them.

"How are you feeling my sons?"

"I feel achy." Mikey complains childishly and Raph rolls his eyes and says, "I feel like I got hit by a bus. What happened Sensei?"

The two 15 year olds look at their father curiously. Splinter sighs,

"You were hit with a couple needles filled with a substance that Shredder wanted to be tested on you." He pauses to see their reactions which ranged from a look of horror and a look of anger.

He continues, "Your brother Donatello has found out that this substance was made to turn whoever was hit by it into the opposite gender of what they are."

The two of them looked horrified at him. "I'm sorry my sons but you will be turned into girls in about an hour or two until Donatello can make a cure."

They sit there in silence for a moment not saying anything until they both yell out,

"WHAT!"

T.B.C

Author's note: Sorry that it's short. Please R&R.