Chin Fei and Flora returns to a new season of Double Chin and play consultants to several kids, each one facing a particular life challenge - Sazali, an asthmatic; Vivian, an obsessive compulsive; Ethan, an anti-social and good friend Liwen, the over-achiever. Out with Nemesis and in with Zero, a new and improve villain who surfaces feeding off their insecurities and fears and destroy their self.

Almost everyone got hit with the falling Zeros... One fell straight into Fei's eye and she meets Zero. He wants absolutely nothing from her. Unfortunately, his nothings are very worrying somethings.

Thanks to Zero, Liwen is super duper guilt ridden and begins her downfall towards something very bad. Zero takes Vivian on an adventure into her skin, just to freak her out.

Fei and Liwen can't figure out what Zero really wants. For the moment, he seems to be doing a fine job at make-overs of Ethan and Vivianne.

Sazali has been spared any tricks from Zero. Flora in the meantime, has been spending time with the coach, much to Sazali's annoyance. Sazali too yearns for soccer instead of basketball.

Fei decides to spy on Ethan to see what he is up to. She is caught. Meanwhile, Zero is tempting Liwen into binge eating.

Vivianne wants plastic surgery and she will stop at nothing to get it. She starts to show of an obsessive compulsive disorder. Zero shows success in pushing Liwen into bulamic as he convinces her that she should eat more meal. Sazali learns that the brain controls the body

Liwen slowly becomes bulimic. Flora is now Vivianne's slave, and Fei is caught while trying to return Ethan's stolen PC things.

Fei tells Ethan that she would introduce Ling Li to him and he suddenly realises that he has to clean himself up to meet the girl of his dreams. Ethan picks up some pointers from Daddy Chin. Liwen tries to tackle her BULEMIA by taking up jogging but overdoes it excessively. Vivianne gets beneath the surface for her skin problems. Flora teaches Sazali about reflexes leaving her knocked out.

Zero takes a zeroliday and sends in his apprentice, The Point to do his dirty work. She stirs up trouble with the kids, but also inadvertantly reveals Liwen's dark secret to Fei. With Ethan also competing to be Zero's apprentice, who will be sent to the boardroom to face Zero's wrath?

Flora takes cover from Vivianne, Mariane Susanne Sng. Zero gives Sazali a taste of bulking up and turn him into a mini muscle machine. Vivianne cannot come to grips with the Point's revelation of her adoption and runs away from home. Meanwhile Daddy and Mummy Chin offer Ethan tips to make more friends.

Zero gives Ethan another lesson in social graces and run him through another round of hilarous face exercises. Fei pins Liwen down and confront her about Bulimia issue. Liwen dropped her karate club and instead eating more to gain energy. She pushes herself to run and as result faints. Meanwhile, Vivianne Mariamme Suzanne Sng realizes her own shortcoming and gets help from a new guardian - the ONE. To add to all confusion, Nemesis shows hims...

Fei with the help of Nemesis have ganged up with the rest of the kids to defeat Zero by facing their own blindspots. It finally dawn upon Fei that Liwen is her blindspot. Eventually they all conquer their fears and defeats Zero. Liwen finally came to her senses about her Bulimia and decides she no longer has to be perfect. At the season finale of Double Chin, Zero falls head over heels with The One.