The episode follows several intersecting storylines involving professional friction and personal surprises:
: Sylvie Brett’s hometown friend, Hope, continues to integrate herself into the firehouse, even securing a job in the bullpen. However, the episode concludes with a shocking revelation: Connie informs Brett that Hope stole $10,000 from her previous employer. [S6E3] An Even Bigger Surprise
: While Mullins initially berates Casey for his risky move, the outcome is the titular "bigger surprise": Mullins recognizes Casey’s leadership and bravery, recommending him for a meritorious promotion to Captain . [S6E3] An Even Bigger Surprise