Falls Alarm!.Ace must face his fear of water when a Baryonyx is activated at Niagara Falls. After they are transported there, Zoe, Max, and both of their dinosaur partners get on a boat toward the falls. Meanwhile, Ursula, Zander and Ed are back again and Ursula challenges Rex and Ace to a dinosaur battle with Terry. Ace is soon knocked into the water, driving him panicked and making it easier for Terry to fight him. Rex tells Ace to stop running from Terry and told him to face his fear. Terry uses Volancic Burst, but Ace dodges it. The attack hits a bridge making the Alpha Gang and Rex go flying. Then, Zoe saves Rex but Zander summons Spiny, who can swim well.