A FIREWORKS EXPLOSION AT A LOCAL CONCERT SENDS PATIENTS STREAMING INTO THE EMERGENCY ROOM – SYD RETURNS FROM AFGHANISTAN AND STRUGGLES WITH GETTING BACK TO NORMAL – TC (Eoin Macken) and Topher (Ken Leung) rush to the scene of a concert where a fireworks explosion has caused massive chaos. As the two jump in to manage the mess, a second explosion causes problems for one of our own. Syd (recurring guest star Jennifer Beals), returns from Afghanistan and helps out with the team at San Antonio Memorial but finds herself grappling with best plans for herself and her young daughter. Drew (Brendan Fehr) tries to help but runs afoul of their unique family dynamic. Paul (Robert Bailey Jr.) and Shannon (Tanaya Beatty) put aside their differences to treat a patient and find they have more in common than they thought. Meanwhile, Jordan (Jill Flint) and Scott (Scott Wolf) treat a patient injured in the fireworks explosion and have a chance to address some simmering differences. JR Lemon also stars.