Ами-тян становится врагом...

Sailor Mercury is in the embrace of the enemy. Declaring herself to be ""Dark Mercury,"" she announces that she intends to bring down the sailor senshi. The senshi have lost their bearings, and as they review recent events they find that while everyone was acting on their own whim, Ami, knitting gloves one-at-a-time, patiently waited for all of them to be together. Now that Ami has become evil, the senshi must fight Mercury in the name of justice. What kind of decision will the girls have to make?