After Mikey sees a shadow at TCRI and his brothers don't believe it is anything, he can't stop thinking what it was. TCRI is also making plans for something big. But the turtles can't find out what so they go into TCRI to investigate. When Mikey sees the shadow again in TCRI he follows it. Mikey is starting to think that the shadow is connected to the kraang's plan someway. Now all he needs to do is found out who or what this shadow is.