Jack plans his 50th birthday party; Liz's ex-boyfriend, Dennis, makes a confession that stirs up drama between Jenna and Liz; Pete and Kenneth try to make Tracy's childhood dream come true.
Something from Trey’s past changes the balance of power at Soulstice, Ilana educates the next generation.
Zoey tells Akalitus that she thinks Jackie may be using again; Jackie tries to convince Coop that Carrie was responsible for nearly losing a patient; Jackie is called in for a drug test.