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Using various parts found around the Ecopoint she constructs a prototype Endothermic Blaster. Just as she successfully completes a endothermic reaction test but before she has finished the system, the power dies completely; she realizes to her growing horror that in her excitement over the message, she completely forgot about saving power. There are no more batteries left either. Without power the station will eventually become an icy tomb, and neither can she finish the blaster: either way means death. As Mei tries to think of a way to restore power-just enough for her work station-Snowball plugs into the room's charging port and drains it's own batteries so Mei can finish the prototype. After thanking Snowball, Mei climbs the tower using her blaster to create ice to climb up. Halfway up a part of the tower breaks off and a tank on the side explodes, sending it toppling over. Mei freezes the tower to the ice wall with her blaster and finishing climbing as it turns dark.
Using an improvised aerial and her laptop, Mei manages to locate the signal to find it is Winston recalling Overwatch agents to active duty. He asks if she is with him as she looks up at the aurora australis in the night sky, and she says "Yes Winston. I'm with you." After leaving each
deceased team member' s mug full of fresh coffee at the foot of their cryopods (as a funeral) Mei sets out into the Antarctic with a set of improvised gear-including a solar recharge port for Snowball. Sometimes after setting out from the Ecopoint, Snowball wakes up and Mei tells it "Rise and shine, Snowball. We're on our way!"