Snide plans to contaminate the city's water supply with venom that makes you forget who you are; Riley has a score with an old rival at the Amber Beach marathon.
Shelby receives a pillow from an unknown sender. When she uses it to take a nap, she starts living a nightmare. The Rangers suspect this must be from Snide so they all make sure to stay awake, but that proves to be harder than they thought.
Chase tries to impress his new girlfriend, Kaylee, by showing how talented and accomplished he is. But when it becomes more about him and less about her, Kaylee starts to fall for the Black Ranger instead.
Tyler attempts to master the new T-Rex Super Charge Mode, but when Heckyl plants a virus in Kendall's computer the new Dino Charger malfunctions and makes Tyler go wild.
Kendall creates a new victory charger that requires the core five Energems; when Riley becomes Koda's baseball coach, he has a hard time pulling himself away to help the other Rangers.
Ivan uses a 1000-year-old suit of armor as a training dummy, and finds himself in debt after destroying it; Heckyl sends a hybrid monster named Spell Digger to spread greed to anyone who touches his gold coins.
Beauticruel plans to use Poisandra's magic paint and brush to make any man fall love in with her; Heckyl devises a plan to steal the Rangers' energems.
Tyler joins Shelby in auditioning for the popular New Zealand band, The N-Zed Boys; an ally arrives, but the Rangers suspect he has an ulterior motive.
The Rangers are determined to catch the vandal who has been spray-painting the museum walls; Snide convinces Lord Arcanon that he can help him steal the Energems.
The Rangers find themselves needing help in their toughest fight yet as they do battle with Snide one final time, and Sledge's eggs hatch across the four corners of the Earth.
The Rangers are surprised when they find mysterious Secret Santa gifts that put them under the spell of Heximas, an evil monster who plans to send everyone a cursed lump of coal on Christmas so he can control earth.
