Mommy Dearest (Grimm)

Opening quote: "I am going off to a house and entering it like a snake... I will devour their babes and make their hearts ache."

Meisner (Damien Puckler) aids Adalind (Claire Coffee) in giving birth to the baby, and also turns Adalind back into a Hexenbiest. Back in Portland, a creature follows a pregnant woman, Dana Tomas (Tess Paras), to her room and uses his extremely large tongue to poke into her belly button. Dana awakes and attempts to cut the creature's tongue before it flees and she falls back unconscious.

Wu (Reggie Lee) and Sgt. Franco (Robert Blanche) are called to the scene to investigate, whom Wu recognizes as friends that moved to Portland from the Philippines under his recommendation, so now feels guilty. Nick (David Giuntoli) and Hank (Russell Hornsby) are also called and while trying to regain consciousness, Dana whispers "Aswang". Dana's husband, Sam (Alain Uy) calls his brother in Manila to inform and question about the events. Then, he too woges into a creature similar to that which attacked his wife Dana before.

Meisner calls Renard (Sasha Roiz) for help after aiding Adalind, informing him that he has a baby daughter and making sure that they will leave Austria safely. Wu begins to reminisce about an old story he heard as a boy about a mythical creature - an "Aswang" - a monster from the Philippines that stalks pregnant woman and then eats their children. Large quantities of Valerian root is inexplicably found in Dana's system, who has recovered enough to leave the hospital to go home. Sam knows that his mother could be involved in the attack and confronts her in her hotel room. Lani (Freda Foh Shen) explains that if she doesn't kill the baby, she will die, but Sam does not listen and brushes her off, angering her. She insists it's Aswang tradition that first born grandsons are always sacrificed to extend the life of elderly grandmothers, and as her son he owes her; then pleads with him that she doesn't want to die. Still, he refuses and hands her a ticket back to Manila, stating that death is a natural progression of life, she must just accept it!

Nick, Hank, Monroe (Silas Weir Mitchell) and Rosalee (Bree Turner) find that the Aswang use their tongue to transmit the tranquilizing effects of the valerian root and siphon off the amniotic fluid - both of which can kill a foetus; but that only those with a familiar tie to the victim can successfully insert their tongue into the belly. They consider telling Wu the truth about the Wesen world but decide that he isn’t ready to learn it. That night, Lani breaks into the house, knocks Sam unconscious and goes after Dana, pretending to be there as a caregiver. Wu, standing guard outside, is surprised to see the creature (Lani) so swiftly climbing the tree & entering the house through the window for such an old lady. When he follows, he can't quite believe what he encounters again attacking/siphoning Dana. When he attempts to intervene, he's attacked by the Aswang. Nick and Hank arrive just in time to kill Lani with a shot to the head but Wu is now thoroughly shocked after seeing the creature transform back into Lani.

Wu checks himself into a psychiatric hospital after the experience. Nick and Hank visit him, and attempt to explain away things - that Lani had a history of aggressive violence, that Dana and the baby are safe, and he's therefore a hero. Not convinced, Wu nevertheless continues to have dreams and hallucinations of the Aswang attacking him.