LaFrey's boss, Director Romslo, puts the whole office on lockdown when a deadly amphibious creature escapes in The Bureau Underground, giving Max and Leroy only 30 minutes to eliminate the threat. The creature's first victim is everyone's favorite coworker, Bob. Unbeknownst to the team, the Sparkletts water boy is locked in the building with them, as well. Amidst the chaos, Leroy starts to suspect that Annie has a crush on Max.
