Event calendar pro in a portfolio grid

Hi everyone, I tried to display my events on my site http://le-ciel.fr/test-grid-home-page/ and would like to create something like this https://paloma-nimes.fr/. I set up my event to be display in a grid portfolio. I'm looking to find a way to implement the meta of my event inside the portfolio overlay. Did someone ever try to do the same ? Does someone has a clue on how to do it ? Thanks a lot, Clément