The sisters finally let their hair down as Sam throws Billie a bridal shower to remember and Paul and Greg get left holding all the babies. In Hertfordshire, it all goes wrong as Sam and Paul attempt to change their nighttime routine so Paul can sleep with the baby. Paul and Greg's prank on Dad Dave at a military bootcamp backfires. Billie takes Arthur on his first-ever modelling gig and Nelly gets flown out to do a big fashion shoot in Chicago.