The plan goes awry, causing Barry to lose his entire memory. He begins going by the name "Bart" .
The episode ends with the reveal that the team needs a power source stronger than the sun to fuel the Speed Force Bazooka—specifically, a Dominator crystal guarded by King Shark . The_Flash_2014_3x21_Causa_Ed_Effetto_ITA_1080p_...
Because Barry loses his memory, Savitar also loses his, rendering him a non-threat temporarily. However, this also causes Wally West to lose his powers, as his speed was a direct result of Savitar's actions in the timeline. The plan goes awry, causing Barry to lose his entire memory
The episode shows brief glimpses of Caitlin Snow fighting to regain control from her Killer Frost persona, particularly after a heartfelt moment with Cisco. Because Barry loses his memory, Savitar also loses
Grant Gustin is praised by reviewers from TV Fanatic for his comedic performance as "Bart," a version of Barry unburdened by the tragedy and "brooding" of recent seasons.
The two share a kiss that helps Tracy finalize the design for the "Speed Force Bazooka". Episode Details Season/Episode: Season 3, Episode 21 Original Air Date: May 9, 2017 Writers: Judalina Neira & Lauren Certo Director: David McWhirter