It must have been a flashback of Jackson triggering the device.

Master Zack's recording clearly stated that once the device was pressed, it would explode when time ran out, but Jackson focused solely on comforting her despite imminent danger to himself.

"I will handle any matters regarding Zeke Shaw from now on, so please don't contact or see him and his family again," Jackson said between gentle kisses to her lips.

Still lost in recollection, Serenity was jolted back by a sting on her neck.

Beneath Jackson's sea-like gaze, she grew self-conscious.

"What are you thinking about?" he looked right into her eyes and asked, noting that she was clearly lost in thought.

He mentioned Zeke Shaw just now, so was she dwelling on her earlier conversation with him? Was she reminiscing about their past?

"Nothing," she assured him hastily. "I'm just thinking that you're right. If you were there, you would have fought to protect me."

"Then, can you promise not to meet with Zeke Shaw or anyon