The two cool jocks are back! After a long week of snowboarding and skydiving, Paul and Hannah are finally ready to talk some Arthur. When the adults are all too busy to care where do their children go to find safety? The strong arms of Arthur the eight year old wise beyond years. Mrs. Tibble has to get to bingo so she entrusts her young wards, the twins Tibble, with the stalwart Arthur. Will his resolve be enough to subdue the troublesome twins?

Also, they have a family reunion. Arthur is scared of his cousin. Blah blah blah... it's funny.