Divorce has plunged Domenico, Ulisse and Fulvio into serious economic problems.
The three men meet for the first time when - looking for a place to stay - they converge on a flat that none of them can afford on a single budget.
The instant proposal of sharing space and expenses brings them together under the same roof.
But under the same roof land also every possible problem each of them has with ex wives, young or grown-up children and capricious new partners.
Instead of solving the housing aspect, they end up by multiplying by three all of their contentious interactions involving alimony, child support and relationships with old and new companions.
This tragicomic and unusual 'menage à trois' will have a disastrous if amusing outcome.