I'm guessing the girl in glasses is a character from something called "Super Robot Wars". She's being pursued by some shadowy bad guys. They first try to use a taser on her, but the girl manages to dodge that.

She's then grabbed from behind and held. Another figure pours chloroform onto a cloth (yes, we get a panel showing that). He places the chloroform over the girl's mouth.

When the girl wakes up, she's bound and gagged. They prepare to inject her with something.

Source: exhentai.org