Daniel Craig igra uspešnega preprodajalca drog, ki si v svoji dolgoletni karieri nikoli ni umazal rok. Zdaj se namerava samo še upokojiti in uživati življenje, toda kaj, ko vmes poseže veliki mafijski šef Jimmy Price, ki ga prosi za dve uslugi. Najti mora narkomanko Charlie in se z nič kaj bistrim preprodajalcem Dukeom dogovoriti za novo pošiljko ecstasyja. Zveni enostavno, toda kmalu se izkaže, da sta nalogi veliko bolj zapleteni. Še posebej, ko se izkaže, da je Dukeov ecstasy ukraden in da mu po življenju streže srbski kralj podzemlja Dragan.
A successful cocaine dealer, who has earned a respected place among England's Mafia elite, plans an early retirement from the business. However, big boss Jimmy Price hands down a tough assignment: find Charlotte Ryder, the missing rich princess daughter of Jimmy's old pal Edward, a powerful construction business player and gossip papers socialite. Complicating matters are two million pounds' worth of Grade A ecstasy, a brutal Serbian gang and a whole series of double crossings. The title "LAYER CAKE" refers to the layers or levels anyone in business goes through in rising to the top. What is revealed is a modern underworld where the rules have changed. There are no 'codes', or 'families' and respect lasts as long as a line. Not knowing who he can trust, he has to use all his 'savvy', 'telling' and skills which make him one of the best, to escape his own. The ultimate last job, a love interest called Tammy, and an international drug ring threaten to draw him back into the 'cake mix'. But, time is running out and the penalty will endure a lifetime..