Teenage Mutant Ninja Turtles (2003) (2003)

S4E23 Good Genes (1)

As Donatello's health declines, the Turtles find themselves in a dire situation. In their desperation, they hatch a plan to infiltrate Bishop's facility. However, they soon discover that to save their friend, they might have to strike a dangerous bargain with an untrustworthy ally.