It's Dad's day with the kids, and for Hawaii Five-0's Grace and Charles, that means landing in the middle of a carjacking.

'Hawaii Five-0' Season 6: Willie Garson Is Back (Again)! What Is Gerard Hirsch Up To Now?

We have yet to see the two Williams' kids together with their father, but episode 18 will see Danny (Scott Caan) try to wrangle both his offspring when their car goes missing. Don't worry though; Five-0's detective would never put the youngsters in any danger.

"They're not really in jeopardy, but they get in a situation where they end up having their car stolen," showrunner Peter M. Lenkov assured TV Line. "They go to spend a quality day with their dad and their car gets stolen for a robbery, and they chase the car... It's a fun story that brings him closer together with his kids."

'Hawaii Five-0' Season 6: Hilarious Valentine's Plot Revealed! Find Out What Cupid Has Planned

The last time we saw the Williams children was at Halloween. Grace (Teilor Grubbs) was busy declaring her independence at a party and Charles was delivering a healthy dose of cute at the children's hospital. Now, we get to see how the little family will function as a whole.

In the meantime, Hawaii Five-0 will show "Umia Ka Hanu" on Jan. 22 and "Hoa 'inea" on Feb. 12 (see a preview below).

Hawaii Five-0 airs Fridays at 9 p.m. ET on CBS.