: 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 .
: Mouch (Christian Stolte) flies in Joe Cruz’s brother, Leon, for a surprise birthday visit. Despite the squad's struggle to keep it a secret, the reunion provides a rare moment of levity for the team. [S6E3] An Even Bigger Surprise
: 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. : While Mullins initially berates Casey for his
The episode follows several intersecting storylines involving professional friction and personal surprises: : Sylvie Brett’s hometown friend, Hope, continues to
: Lieutenant Matthew Casey (Jesse Spencer) immediately clashes with Sam Mullins, a temporary Chief filling in for Boden. The tension peaks during a "jumper" call where Casey ignores protocol to save a man from leaping off a building.