They are visiting a Republic planet and Poe meets his old friend, who for some reason (revenge? lust? both?) spikes Poe's drink and intends on raping him, or/and pays other people to rape him. Fortunatelly Finn was suspicious of them and rescues Poe.

+Finn takes care of confused, disoriented Poe
++Finn was suspicious not because he was jealous or something, but because he reads people well and the "friend's" behaviour raised a red flag

(competent, kickass!Finn, please, but no killings)