Un niño llamado Duncan abre su caja de crayones y encuentra un montón de cartas de queja. Cada color se ha declarado en huelga por una razón diferente: el rojo está cansado de trabajar en vacaciones (Navidad y San Valentín), el azul está exhausto de pintar tanta agua, el rosa exige que lo usen más y el naranja y el amarillo ya no se hablan porque ambos reclaman ser el verdadero color del sol.

While there are many sites that claim to offer this PDF, such as some educational resource pages or content aggregators, they are almost always unauthorized copies and infringe on copyright laws. Attempting to download these files could expose your device to malware, and they are not "verified" in any official capacity.

, the self-appointed CEO of the box, sent a memo to Duncan. "I’m overworked," Red wrote, "but more importantly, I’m not empowering the other colors. According to the 'Law of the Lid' in this PDF, my limited perspective is stopping this box from reaching its full potential." Blue Crayon

The book was originally published in English in 2013 and quickly became a bestseller, known for its unique premise where a box of crayons go on strike, writing letters to their owner, Duncan, to complain about how they are being used (e.g., the Red crayon is overworked, the Beige crayon is tired of being second to Brown).

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