Mushure mekunge apindura mubvunzo, J anoenda kuConey Island, achiziva kubva muzvinyorwa zveAgency kuti muna 1969, Boris achauraya ikoko. Zvisinei, anopedzisira asungwa na1969 K, uyo anomutora kuenda kuMiB Headquarters uye anogadzirira kumuita neuralyze, asi anosarudza panguva yekupedzisira kuongorora zvirevo zvaJ zvekuti akafamba kubva mune ramangwana kuti amudzivirire. K naJ vanoteedzera zvinongedzo, zvichivatungamira kunhandare ye bowling, vobva vaenda kuFekitori, kwavanosangana nemumwe mutorwa anonzi Griffin, uyo ane ArcNet. Griffin, uyo anogona kuona nguva dzese dzenguva yemberi uye mhedzisiro, anonzwa kuti Boris ari kuuya uye anotiza, achivimbisa kuvapa ArcNet nguva inotevera yavanosangana. Boris Griffin anobata J. K uye anozviita uye anonunura ArcNet.
Coney Island