*it take place in the episode 6 of season 1 after You Didn't know")

after Charlie confessed to Lute, in front of Adam..tha she was an angel and ex-exterminator, she sent them back to hell, and then after Emily blamed her for this, she left, Sera didn't understand and after she talks, Emily respond.

"THEY REVOLT SERA! AS LEADER OF THE SERAPHIM...I must protect our people at all costs...and you must ensure that they are happy and joyful.” she said to Sera