When a meth lab in Sylmar explodes, killing two kids, TJ and Winters embark on an odyssey that uncovers a band of radical Muslims hell-bent on bombing LAX.

Don Alvin's quiet life is destroyed when an intruder ambushes he and his family in their home, killing his wife and son. After searching for clues, the detectives discover similar cases that lead them to one powerful common thread. Meanwhile, DDA's Dekker and Rubirosa have to tread carefully in order to get a guilty verdict after Morales' puts their case in jeopardy.