"Birthright: Part 1" is an episode meant to connect "Star Trek: The Next Generation" with its new spin-off series "Star Trek: Deep Space Nine" which debuted around the same time as this episode. Oddly, however, the only real tie-in is seeing the station as well as Dr. Bashir and NONE of the other station regulars. This is quite odd-- like a half-hearted tie-in show.
When the show begins, Dr. Bashir and Data are talking a lot about stuff. Then, unexpectedly, their little experiment in engineering runs amok and zaps Data with a bazillion volts. He's inoperable for about 30 seconds and during that time he has what seems like a near- death experience with his creator, Dr. Soong. During the rest of the show, Data tries to come to terms with this.
The other plot involves Worf. Some alien approaches him and says that Worf's father did NOT die years ago during a Romulan attack but is STILL being held prisoner. He then gets this mercenary guy to take him to this planet to investigate.
Overall, we have two plots that are just okay...nothing more. The show is odd for a two-parter because not a lot of consequence occurs.