A 12-year-old monster fan turns to hand-built model kits to escape his unhappy reality; a public TV station is overwhelmed when the appraisal of an antique book accidentally summons a…

Johnny picks up defensive strategies while Daniel learns how to go on the offensive. Amanda confronts Tory. New kid Kenny is bullied at school.

Kenny tries to become a student of Cobra Kai with some encouragement from Robby, while Johnny urges Sam to take a leap of faith – in herself.

Daniel invites Anthony to join Miyagi-Do and discovers he doesn’t know his son as well as he thought. Miguel learns the truth about Johnny and Carmen.

It’s Christmas Eve and Danny tells Charlie a bedtime story about a recent Five-0 case involving criminals dressed as Santas and a holiday miracle.