"The Sleepers, Part 2"
Green Shield 17. Continued from Superman: World of New Krypton #2 and continues in Supergirl (2005) #40.
*Nightwing (Christopher Kent) and Flamebird (Thara Ak-Var) are in a world of troubles at the hands of the implacable and merciless Ursa. Now the only chance for these Kryptonians heroes to survive this deadly encounter resides in Nightwing's strength to defear his own mother. *Source: dccomics.com