The Flash from Earth-3 is fighting the Trickster when Barry arrives to ask for advice on Savitar.
H.R. times Wally as he runs around the lake and finds Wally is faster than Barry was at this stage of his training.
Cisco tracks Dr. Alchemy to a building that he is using to give power to Savitar and Barry ends up revealing Alchemy's true identity.
Savitar drops the Earth-3 Flash in an alley and prepares to kill him before getting pulled away by the stone.
Source: Mohd Abdulla — Twitter
Barry lands in an alley after throwing the stone into the Speed Force only to realize he is in the future.
Barry walks across the street into a park and sees himself confronting Savitar who is holding Iris hostage.