Ghost of Relativity (Chinese: 鬼同你OT; Jyutping: Gwai2 Tung4 Nei5 OT; Cantonese Yale: Gwái Tùhng Néih OT; literally "Ghost to Overtime With You" or "Who The Hell Wants to Overtime With You") is a 2015 Hong Kong romantic-comedy with a supernatural theme television drama created and produced by TVB, starring Moses Chan, Kristal Tin and Nancy Wu as the main cast.

The Chinese title has a double meaning, when read accordingly it literally translates to "Ghost to Overtime With You", however the word "ghost" (鬼) is also a Hong Kong slang that is equivalent to "who the hell" in English, so the Chinese title could also translate as "Who The Hell Wants to Overtime With You".

[1] May Suen Suk-Mui (Kristal Tin) is an absent-minded, dim-witted, unambitious thirty-something year old, who gets lucky during her job interview as a receptionist at GSZ Architects Limited.

The human resources manager Ma Mei-ching, had unconsidered her for the position after seeing she was late to the interview and had unimpressive work experience.

She has been in love with architect Michael Mai Hoi-long (Moses Chan) for many years, and she drops hints about her feelings for him hoping he will know how she feels, but Michael is too involved in his work to notice Gin and only thinks of her as an extra supportive co-worker.

Gin has patiently waited and supported Michael for many years hoping when he receives the recognition he desperately seeks for his designs, he will put his work behind him and finally notice her.

May who was only interested in the attractive salary of the position at first begins to take her work seriously when she gets to know Michael better and learns how important his current project is to him.

But Gin's hard work to build up May's reputation at GZS is soon threatened when May's con-artist ex-boyfriend Wong Tai-lung gets a job at GSZ and has ulterior motives.

Michael who is in love with May does not make it any easier for her when he finds excuses everyday to have her work overtime at the office with him.

With the help of Tit-man, May's family and co-workers, they try to find her spirit that has been electrically wandering around Hong Kong.

May, who earlier used her spiritual powers, cannot return to her body; Gin helps her and gives her blessing to May and Michael before disappearing into thin air.

Five years later Hugo and Charlie are serving prison sentences with Wong Tai-lung as their jail cell boss.