A bomb planted aboard one of the ships competing in the Federation Cup is just one of the mysteries facing the crew of the Enterprise. There is also the missing ship of the Mestral's, a prominent alien head-of-state. Plus, the star that fuels this race of solar-sailing craft is acting strangely...and it seems to be affecting Counselor Troi.
— Description from Comic Vine community (comicvine.gamespot.com).