This week: Gates surprises Joshua with a day trip to Wrigley Field for a Cubs game, Neela returns to work and makes a cool save, the ER staff are all getting free spa treatments from a grateful patient's mom, Pratt treats a former NFL player with a bad hip, Chaz is getting hazed by his new EMT partner, Morris scares a small child, a new desk clerk joins the staff, and Abby's downfall truly begins after Joe is brought to the ER with a head injury.