MOBILE OBJECT CONTROL DEVICE, MOBILE OBJECT CONTROL METHOD,AND STORAGE MEDIUM

A mobile object control device recognizes an object which is located near a vehicle, generates a movement plan for the vehicle, which includes generation of a target trajectory in which the vehicle is to travel and which is obtained by connecting a plurality of trajectory points, and generates, when generating the movement plan, the target trajectory such that a line which is obtained by connecting trajectory points adjacent to each other with respect to a traveling direction of the vehicle does not pass through a risk area including the recognized object.