As the Stones race to find the Omega Sapphire, Ben finds hope in a Calling that reunites him with a familiar face. Zeke faces a difficult choice.

An ominous Calling shakes up Michaela and Zeke’s party. Cal and Ben receive devastating news. Michaela, Saanvi and Eagan look for the Omega Sapphire.

Walker attempts to make this the most memorable Thanksgiving ever in the hopes of luring Stella to return home, but when the family’s annual “Circle of Thanks” turns into a circle of grievance, tensions bubble over- leaving things worse off than they began, with one member of the Walker family being rushed to the hospital.

Walker makes good on his promise to Liam to finally discuss captivity, and painful details from the past inform the present to help the Rangers eliminate a dangerous threat. Meanwhile, a new case forces Cassie to confront her aversion to dating.

Dr. Manning and Dr. Charles treat a teenage girl with a rapidly changing set of symptoms that has everyone perplexed. Dr. Choi and medical student Jeff Clark encounter a 19 year-old tough guy who is brought into the hospital in severe distress. Once they establish the cause of the pain, the situation quickly turns dangerous and a resolved Dr. Reese does her best to help. Dr. Halstead must deal with a difficult case that is further complicated by Dr. Stohl, who has a camera crew following him around to shoot a promotional video spotlighting the hospital.

As the Federation hangs in the balance, the crew must make the ultimate sacrifice to save Starfleet’s future.

During a would-be simple assignment, a misunderstanding causes Walker and Cassie to examine where they are in life and what lies ahead. Meanwhile, August strives to roll with the cool kids to disastrous results and Trey struggles with what being a Ranger means for his relationship with his mother.