The boys decide to host a science fiction convention and Dolly approves it, hoping it will fail so that all future decisions are hers. However a genuine alien, Evil Destructor from the planet Splurge, turns up and steals the hotel's soap to fuel its return journey. Having been abducted by the alien some years previously, Mrs. Poshington knows how to send it packing but Dolly thinks the whole incident is down to clever special effects and gives it her approval.
Grumpy Scots entrepreneur Duncan Banana-Time comes to the hotel to film the final of his show 'Dragon's Den' but,in the absence of other dragons, Sally,Jamie and a dummy fill in whilst Lenny tries to pitch his inventions. It is a disaster,not helped by the presence of Mr. Sham,the world's most annoying autograph hunter,and Duncan very nearly buys the hotel to fire the staff. Until he sees Mrs. Poshington's amazing new triple broom...
Expecting pop duo Jeleanor to visit Jamie advertises a musical extravaganza but when they cancel he plans his own show but does not cast Dolly,due to her dreadful voice. In pique she rings her old friend impresario Lord Lloyd-Blubber to stage a rival musical,stealing away Jamie's cast. However,when his Lordship proves to be a con-man who steals the hotel funds it is down to Lenny and his song 'Fingers in Your Face' to ensure a musical success for the gathered audience.
Jamie has entered the hotel in a contest - behind Dolly's back - to find the Best International Hotel of the Year,so when demanding Japanese businessman Mr. Takahashi arrives he assumes that he is the contest's judge posing as a guest and all the stops are pulled out to please him. Sadly not only does everything fail but it means the staff neglect and insult the real judge Mr. Baker. Fortunately Mr. Takahashi has fond memories of Dolly when she was a chart-topping pop singer in Japan and saves the day by booking the hotel for a month for his baked bean convention.
When Mr. Trubble installs webcams in each of his global hotels to find the most boring and shut it down,Dolly,keen to relocate to Rio Janeiro,brings in her ex-boyfriend,boring Lionel Putty,for the World's Dullest Person contest. When Jamie's efforts to liven things up fail an unexpected life-line is thrown in the form of Explodo,a super-bad villain who does battle with Hotel Trubble's own super-hero Jamie,alias Hotel Manager Man. The resultant scrap,captured on video,ensures the hotel's success but who is Explodo?
Unknown to the others Sally has been running a blog exposing celebrity guests' secrets under the name of Snoopergirl. When bratty American pop princess Jenny Montenny comes to stay Mr. Trubble makes it clear that any Snoopergirl revelations about her will result in mass sackings. Tumbling to Snoopergirl's identity Dolly and Jamie work together to prevent Sally from learning that Jenny is actually 65 years old,and - literally - pull it off.
Mr. Trubble's fussy Auntie Phyllis is coming to stay and everybody must be on their best behaviour - which includes disguising Sally,who was supposed to be sacked after Phyllis's last stay.Unfortunately outrageous pop star Lady Gaahouse books in for the photo shoot for her new album cover.Chaos reigns as she fights with Sally and Lenny,in drag,takes a pneumatic drill to the hall floor. Can the staff successfully persuade Auntie that she has dreamed it all?
Jamie is suspicious when Dolly sends him on holiday and returns to find she intends to replace him with a robot - Bell Boy Bot 3000. However the robot is evil and intends to destroy the hotel, leading to a showdown in which Lenny's floor-polishing and the ever heroic Mrs. Poshington save the day. Now all the staff have to do is persuade the visiting hotel inspector that the whole event is a part of the hotel's Robot Experience.
The American president checks in so that he can hide from the public eye and do childish things but when he gets locked in the toilet Lenny ends up with his laptop and accidentally passes a law that orders everybody to dress up like a clown and do the Hokey Cokey. Fortunately the president has a rewind button that reverts things back to normal but nobody asks why Sally has been replaced by Daisy, an animal rights activist who has hidden an elephant in Room 360.
Fashion guru Thingy (minus her usual partner Sultana) books into the hotel to judge the Best Dressed Staff contest,for which Daisy and Dolly have both submitted entries to design new uniforms. At the same time Lenny inadvertently signs an old document allowing the hotel to be used as a public footpath - though at least the resultant blockade of sheep prevents any more contestants arriving and guaranteeing a win for Hotel Trubble.
Following the departure of the Wacky Inventions convention Lenny finds that somebody has left behind a time machine,out of which steps Henry VIII,who makes Lenny his jester and proposes to the female staff. Since the Historical Reenactment Society is also due to book in Jamie is unconvinced by the king - until he steps into the machine and briefly encounters the Norman invasion. With three executions now on the horizon Jamie devises a plan to send Henry back to the future.
TV presenter Barney Harwood comes to the hotel to make his show 'Britain's Most Boring Bellboy' and Jamie seems a likely candidate sine every time he speaks it sends Barney to sleep. In an effort to show that he is exciting Jamie dresses as Tarzan - only to find that he has ended up in a totally different show.
In the year 4011 the hotel is floating in space,Lenny is a robot and Dolly a cyborg. A mysterious visitor,Salgar,arrives at the hotel and accuses it of having lost its sense of fun - helped by clips from the whole series. However Salgar is not what he seems to be,which accounts for why Sally is not around.