Juan, Sara, and Samuel, three teenagers from the slums of Guatemala, travel to the United States in search of a better life. On their journey through Mexico, they meet Chauk, an Indian from Chiapas who doesn t speak Spanish. Traveling together in freight trains and walking on railroad tracks, they soon have to face an odyssey that will change their lives forever. Tres jo venes de los barrios bajos de Guatemala viajan a los Estados Unidos en busca de una mejor vida. En el camino a trave s de Me xico conocen a Chauk, un indi gena de la sierra de Chiapas que no habla espan ol. Viajando juntos en trenes de carga, caminando en las vi as del tren, pronto tendra n que enfrentar una odisea que cambiara sus vidas para siempre.