"NEUTRINOS AND DARK MATTER are the most abundant particles in the universe and yet they remained unnoticed -invisible- for a long time, due to their tenuous couplings to the ordinary matter we are composed of.Neutrino masses inferred from neutrino oscillations and the existence of dark matter constitute the first evidence ever of particle physics beyond the Standard Model. A wide experimental program focused on the properties of both type of particles is imminent and major breakthroughs are expected soon. The road to build the New Standard Model of particle physics is open: the theory must encompass the nature and properties of neutrinos and dark matter, besides those of ordinary matter.The mission of INVISIBLES ITN is to form the new generation of young researchers which will accomplish this task.It will focus on neutrino and dark matter phenomenology and their connection, with the indispensable link to experiment and a deep understanding of theoretical and astroparticle issues. It will be the first transnational program on these topics, exploiting the capital investment in new experimental facilities and overcoming the fragmentation of the research effort.INVISIBLES ITN is uniquely placed to achieve its goal: i) World-leadership in all relevant scientific areas; ii) A novel multidisciplinary approach fostering the neutrino-dark matter synergy; iii) In addition to theorists, inclusion of key experimentalists; theory-experiment cross training is a unique characteristic of this ITN; iv) Outstanding training record; v) CERN, Fermilab, XENON and SuperKamiokande -the four major experimental players- as partners; vi) Partnership with the world-leader research-related industry and cutting-edge technology transfer; vii) Strong outreach and communication program, with two dedicated companies; viii) Top-quality expertise from emergent countries; ix) Optimal in gender balance and role models, with over 60% female and mostly junior international leaders as coordinators."