Good Guys vs Bad guys

This is a fanfic I've wanted to do for a long time. What happens when good guys meet the bad guys? What happens when two lots of good guys meet two lots of bad guys? What happens when the bad guys are trying to steal the same thing? Gallagher Girls and Blackthorne Boys meet Kat's crew and Otto's crew in a crossover between the Gallagher series, Heist Society series and the H.I.V.E