A thief has been breaking in houses around Usagi's neighborhood and unfortunately she has to spend that night alone so when Seiya hears about this, he offers himself to act as her bodyguard and defender; just for one night. However, when Yaten, Taiki, Ami, Rei, Makoto, Minako Haruka, and Michiru all arrive, chaos ensures when a phage comes; especially when everyone tries to hide their identities as Sailor Senshi from the others.