What will happen in Başka Bir Gün Season 1 Episode 3?

Nehir is aware that Meral will continue to suspect her, even though she denies Prosecutor Meral's accusations. However, Nehir has new suspicions inside her. She is now certain that Tuna is hiding something from her about Serdar. When she confronts him, what she learns from Tuna makes her realize that Serdar is not only hiding something from her, but also putting her and her children in great danger. Still, she is forced to go after that danger in order to find Serdar. When she realizes how big a problem Serdar has left her alone with, a huge development regarding Serdar takes place that she never expected. Will Nehir be able to protect her children from the danger they have fallen into?