Old Kai's Last Stand is the twenty-second episode of the Baby Saga and the thirty-seventh overall episode of Dragon Ball GT. The original Japanese title is "Sozetsu!! Bebi to Goku daburu KO!!" The episode first aired on February 12, 1997.
Goku has taken a full hit from the Super Galick Gun, so Baby prepares to finish him with another blast, but then a delayed Kamehameha Wave hits Great Ape Baby and knocks him down. The two fighters prepare for the next round both fully worn down.
On the planet of the Kai's, Elder Kai then lets Kibito Kai know the next move in his plan. Kibito Kai needs to get the Sacred Water from the Lookout and use it on Gohan, Trunks, and Goten to free them from Great Ape Baby's control. After confirming the location, Kibito Kai heads to Earth to get the Sacred Water.
On the lookout, Kibito Kai gets caught by Dende and Mr. Popo. He uses the regular water from the lookout to distract Dende and Mr. Popo until he can get to the real Sacred Water. Then he uses the Sacred Water on Dende and Mr. Popo freeing them from Great Ape Baby's control.
With the Sacred Water now on hand, Kibito Kai heads to the Tuffel Planet to free Trunks from Great Ape Baby's control first. He gives a small amount of Sacred Water to Trunks, and then restores Trunks power. Trunks is freed from Great Ape Baby's control now, and he can remember nothing, so Kibito Kai lets him know what's been going on.
Elsewhere on the planet, both Great Ape Baby and Goku are down for the count. Both are on the ground and appear to be unconscious, so Kibito Kai asks Trunks to keep Great Ape Baby distracted while he frees Gohan and Goten from Great Ape Baby's control. Bulma manages to get her Blutz Wave Generator working again though and she fires it at Great Ape Baby to fully reenergize him. Goku pretends to have his full strength back, but he's maxed out.
Can Trunks arrive in time to help Goku, and can Kibito Kai free Gohan and Goten from Great Ape Baby's control in time? If so, who has the strength needed to defeat Great Ape Baby for good?