The trailer of the third season of Kate Wetherhead and Andrew Keenan-Bolger's webseries, Submissions Only, is like going on a theater-geek safari: To your left, Jesse Tyler Ferguson! To your right: Kristen Chenoweth. And over there: Nick Jonas!

Wetherhead plays sprightly Penny Reilly, a struggling actress juggling relationships with her best friend Raina, her agent Steven, her boss Tim (who happens to be Steven's ex) and Aaron, who may or may not be the man of her dreams.

But those are just the principles—Submissions Only boasts a cavalcade of celebrity guest stars: In addition to Ferguson, Jonas and Chenowith, Season Three includes appearances by Audra McDonald, Kristen Johnston, Michael Urie, Bobby Cannavale, Judith Light, Rachel Dratch, Linda Lavin, Joel Grey, Joanna Gleason, Roger Rees, Chita Rivera, Jeremy Jordan, Lea Delaria, Malcolm Gets, Tony Roberts, MaryBeth Peil, Adam Pascal, Kerry Butler, Laura Osnes, Lin-Manuel Miranda and Harvey Fierstein.

It's a wonder they have time for a plot with all those cameos!