There’s only one week until the workshop and everyone is stressed out. Derek (Jack Davenport) is angry with Julia (Debra Messing), Tom (Christian Borle) is angry with Derek (as usual), and Ivy (Megan Hilty) is on the verge of losing her voice. “Chemistry” deals with the chemistry between Michael (Will Chase) and Julia; Ivy and Derek; Eileen (Angelica Huston) and Ellis (Jaime Cepero).