Verb (5-dan, む, intransitive)
1. to board (a train, plane, etc.); to get into (a car); to get on (a bus); to go on board; to get aboard
さっさと乗り込み、さっさと車を出します。We quickly get in and quickly drive off.
2. to march into; to enter; to arrive (at, in)
なにも言わずに直接乗り込むよ。I'll march right in without saying a word.