The summary could be:
This is a story about how SCP-999, a friendly and harmless creature, tries to help humanity survive a global catastrophe caused by SCP-001, a phenomenon that turns the sun into a deadly weapon that melts and transforms people into flesh monsters. SCP-999 rescues a boy who was separated from his mother and brings him back to the SCP Foundation's site 19, where he also boosts the morale of the staff and the refugees. The story contrasts the horror of SCP-001 with the hope of SCP-999, and ends with a promotion of an SCP-999 plushie.
Here are some key facts extracted from the text:
1. The text is about SCP-999, a friendly and helpful anomaly that can make people feel happy and calm.
2. The text describes a scenario where the sun becomes hostile and melts anyone who is exposed to its light, turning them into monstrous flesh creatures that seek to assimilate others.
3. The SCP Foundation tries to save as many people as possible by bringing them to their containment sites, especially Site-19, where SCP-999 is located.
4. SCP-999 helps the survivors cope with the trauma and despair of the apocalypse by cuddling with them and radiating positive emotions.
5. SCP-999 also rescues a little boy who was trapped in a bank by shielding him from the sun's rays and bringing him back to Site-19, where he reunites with his mother.
6. The text ends with a promotion of an SCP-999 plushie that can be purchased online and a suggestion to watch more videos about SCP-001 and SCP-999.