Naughty elf has gone missing!

At this time of year , at the beginning of December, the naughty elf  (called "Nelf"  by No 3) usually makes his reappearance in order to reek havoc on a daily basis and much to No 3's amusement.
For some reason though he has mysteriously gone AWOL!
Willing to step into the breach though is this very naughty monkey and his sidekick little Xmas reindeer. Let the naughtiness begin!