Tony and Ziva are forced to go undercover as a married couple who were expecting their first child together after a midwife seemed to be on a killing streak and is killing marine wives and babies at birth, which meant Tony and Ziva were gonna have to have an actual baby together what will happen during the next 9 months as the pair go undercover will anything change between them knowing they will be having a baby together or will they just end up partners with a baby.