Kevin's daughter Emily is missing in Downtown Chicago during the Christmas season. But from learning about Christmas stories from her dad, she is able to defend for herself and runaway from the wet and sticky bandits. Emily does her best to defend herself and at the same time, Kevin and his wife Melissa try to find Emily before Christmas Eve 

SYNOPSIS:

Kevin Mcalister is no longer the little boy from Home Alone 1 and Home 2: Lost in New York and now in 2019, Kevin is now in his 30's and he has a family of his own and has a wife name Melissa and a daughter name Emily. And they travel to Chicago to see the whole Mcalister family and to see Buzz, Megan, Uncle Frank, and Kate Mcalister who is now a grandma. And they spend Christmas at home at the old Mcalister that now has been renovated and looks really nice and up to date. But trouble really starts there is robbery at a mall in Chicago that causes Emily to get separated from from Kevin and Melissa and the rest of the family. Everyone in the family expect for Kevin who has taught Emily how to defend for herself whenever she is alone and by herself. And Emily by herself goes to a hotel like Kevin did in Home Alone 2 and she goes there and she meets a man name Mr. Lawrence Ware who works with Kevin and also meets old man Marley's grand daughter that also Emily. But what makes things even more awful and terrible is that Marv and Harry are now super rich and they own a criminal organization in the city that hacks into cameras and steels a boat of load of money and helps terrorist around the world. And they are no longer field criminals but are evil CEO of this company. And now Marv's daughter Joan and Harry's grand daughter Brenda now are the field criminals and are now in the positions that Harry and Marv use to have when they were younger in the 1st and 2nd movie. And they find out who Emily is and they chase around downtown Chicago around a lot of different locations. Intel Emily goes on a plane back to New York City. And Kevin heads there himself to save Emily but both of them are captured by Joan and Brenda and get taken to Marv and Harry. And Kevin is able to defeat Marv and Harry but the battle is a lot more harder as now as old men, they are more stronger and Kevin's old gadgets don't work on them no more. But Kevin is able to defeat Marv and Harry and their off spring once and for all in order to save Christmas.

HOME ALONE: MARV & HARRY'S REVENGE