Nick must look inside himself and decide who he wants to be while also dealing with fathering a child with Adalind.

Nick makes changes to keep Adalind and his child safe, with the help of Monroe and Rosalee. Hank and his new partner investigate a murder at an investment group.

Rosalee disappears after some orphans decide she is the mother figure they always wanted and an encounter with a former colleague prompts Adalind to consider going back to work.

Nick and Hank are called to the scene when three Wesen go out on a hunt at a local dump and get more than they bargained for when two turn up dead after they encounter the mythical Rat King. Meanwhile, a very badly wounded Trubel is taken to the hospital and Nick finally meets Meisner.

Nick and Hank investigate a wave of coordinated Wesen gang vandalism that results in the death of a local business owner and the kidnapping of Monroe and Rosalee's friend. As they dig deeper, they learn that Portland wasn't the only city hit with a wave of violence. Meanwhile, Truble fills Nick and Adalind on what she has been up to. Elsewhere, Capt. Renard dips his toes into politics as he endorses a local candidate.

Nick and the gang are still reeling from the scope of the ambush and the surprise return of "Juliette", but not everything is as it seems. In light of the heightened Wesen violence, Monroe and Rosalee seek answers from the Wesen Council. Meanwhile, Trubel has some information for Nick that will help him get what he is looking for.

A barbaric Wesen ritual is brought to the present and Nick, Hank and Wu are already five steps behind the serial killer. To aid in the investigation, Monroe goes undercover. Meanwhile, Hadrian's Wall's war against Black Claw intensifies as Eve uses her unique skills to interrogate a suspect.

Newly gained artifacts take Nick and Monroe closer to the source of a long-gestating mystery. Elsewhere, Black Claw makes a deadly move that will send Portland into disarray.

A local maskmaker is targeting Wesen to create Luchador masks that bestows great power to its wearer. As Nick, Hank, Monroe and Rosalee work to stop the killings, Capt. Renard considers an offer that will bring him closer to claiming his destiny. Meanwhile, Eve's further investigation of a recent incident raises new questions.

When Nick and Hank come across a beautiful young woman who seems to have aged 70 years overnight and died, they suspect Wesen involvement. The investigation leads to a local doctor and Rosalee is enlisted to help find the truth. Meanwhile, Eve takes bold steps to learn more about Capt. Renard's nefarious dealings.

When the severed head of a young man is found under a bridge, Nick and Hank find themselves on the case of Japanese Wesen acting on an ancient tradition of revenge. Elsewhere, Adalind decides to go back to work at her old law firm and has her first face-to-face with Eve.

Suffering from the bite he sustained, Sargeant Wu becomes entangled in a surprising altercation that may land him in hot water. After meeting the mysterious Bonaparte, Adalind is faced with a difficult decision that could change her and Nick's lives forever. Meanwhile, Hank gets even closer to Zuri and their relationship begins to take shape. Back at HW, Eve senses that a new force may jeopardize the entire operation.

Black Claw makes a strategic move against Hank that shocks everyone and sends Nick on a war path. Hadrian's Wall ramps up their investigation as they seek out a mysterious man named Bonaparte. Meanwhile, Adalind and Capt. Renard must learn to deal with their new and very unpredictable reality with Diana.

Hank and Wu find a solution to stop Renard while Nick is still on the run. Adalind receives a phone call that throws her into the middle of everything. Back at the spice shop, Monroe and Rosalee's adventure in babysitting takes an interesting turn when Diana demonstrates her power. Meanwhile, Eve and Trubel work to solve the mystery of the cloth found with the healing stick.

In order to stop the rise of Capt. Renard, Nick devises a plan that will take him out of his element. Adalind and Monroe do everything in their power to keep the plan on track. Meanwhile, Eve and Rosalee race against time to get the spell ready before it is too late.

Nick and Hank join Wu to investigate a bizarre murder in a local park. Elsewhere, Capt. Renard continues to deal with a ghost from his past. Meanwhile, Monroe and Rosalee visit the doctor to see if Diana's premonition is true. Back at the loft, Adalind finds a very weak Eve in the tunnels and mysterious drawings scrawled on the walls.

Rosalee surprises Monroe with a getaway for his birthday and invites most of the gang to join them. Things take a shocking turn when a hotel employee targets Nick in an effort to avenge his father. Meanwhile, Eve gets a visit from a dark force that she has seen before. Elsewhere, Capt. Renard spends the weekend with Diana when a former ally decides to get even.

Nick, Hank and Wu are called to the scene of the crime where a man claims his friend was consumed by a tree-like figure. Meanwhile, after the gang learns of Eve's disturbing mirror encounter, everyone takes extra precautions. Elsewhere, Capt. Renard searches for answers to what Diana was drawing.

Eve goes on a mission to take on the mysterious force she saw in the mirror and finds herself in unfamiliar territory. When the gang discovers what she has done, Nick finds a way to join her. Meanwhile, an uneasy alliance is established when Capt. Renard is brought in to help and discovers this all may be connected to the person he cares for the most, Diana.