Elektra learns that her former clan, The Hand, are going to assassinate Matt Murdock.
Murdock is still working the case of Melvin Potter (The Gladiator). It turns out there's a contract on both of them. Elektra has come to New York to help. Matt is caught in an explosion and looses his radar sense, so when he goes to help Potter against The Hand, he doesn't realize Elektra is there as well.
The Hand are now out to kill Elektra.