After Binghamton files a charge of cowardice against Parker, he thinks that Parker is faking when the ensign claims to have spotted a German U-boat in Pacific waters. However, it turns out that Parker is right... and he and the 73 crew to have stop an alliance between the two Axis powers.

The crew convinces Binghamton that they can get actress Rita Howard to the base. Once they pull that off, they have to get her there past her officious Army escort... which requires Parker to pose as a doctor.

Binghamton has to impress a visiting admiral with a testimonial dinner in his honor... but no one wants to come.