When we last left off with DC Bombshells, the good doctor Harley had just abandoned her post... crashed a few parties.... dumped Green Lantern and stole a plane. Just a typical night out in London. Am British by birth - can confirm.
Harley flies over the English Channel (comic puts her at 3 miles from Calais, France but still in 1940) singing her best mutilated Christmas Carol when she's shot down by no less than three tanks. I mean, it IS a special occasion after all. Harley doesn't mind, she rides one of the overlarge shells down in her best Dr. Strangelove impersonation - never mind that the shell must be scorching her thighs, there's debris everywhere, she's falling to her imminent doom and she's wearing a bikini top and mini shorts in the frigid weather.
Luckily, she lands safely in a random greenhouse. Her irritation at the shell for.... not going off? ...is somewhat abated by the appearance of a mysterious, yet clearly armed woman.