After an armored truck is robbed, the team discovers that the stolen goods are chemical weapons and they must race to thwart a terrorist plot. Meanwhile, Jane grapples with a confusing memory of Weller - while growing even closer to Oscar. Meanwhile Patterson receives a phone call from someone from her past.

A tattoo points the team toward a powerful collegiate secret society, but they can't infiltrate it without the help of one of its alumni...Rich Dotcom.