Lieutenant Karen Hester-Jones, a zoologist who is an old acquaintance of Kirk, reports to him on the bridge with her research data on the primates of Tau Ceti IV. The Endeavor moves toward the Enterprise and fires its phasers, even though there are no lifeform readings aboard. The Enterprise disables Endeavor with photon torpedos. Captain's log – stardate 7640.2 : We have achieved standard orbit around Mycena and I have joined a landing party now exploring the planetoid's surface...