The Republicans, of course, promptly voted it down. It didn't get a lot of media attention, so unfortunately I can only link to the
Congressional Progressive Caucus and their own description of the plan.
Basically, they cut military spending, restored nominal tax rates to their Clinton-era levels (which still represents a historically low tax rate in the post-WWII world) and cut out some loopholes. It cuts the deficit more than Ryan's budget does. And it still manages to
increase funding for infrastructure investment, education, and social programs which are broadly popular among the American public.
If the cut the military budget (that is far long overdue) AND cut entitlements, the country could be debt free in 20 years.