THIRTY years after his childhood trip to Walley World in Vacation (1983), Rusty Griswold (Ed Helms) takes a similar Vacation (15A) with his wife Debbie (Christina Applegate) and sons James (Skyler Gisondo) and Kevin (Steele Stebbins). 

The late great Robin Williams helped his teenage co-star, Skyler Gisondo, get a date for prom with a little help from Ben Stiller and Crystal the monkey.

With the special magic of the tablet in peril, the gang flies to London in search of a solution.