The group spent the afternoon hanging out with 18-year-old Ryan Wilcox and his family

You don’t always need superpowers to be a hero.

On Monday, Gwyneth Paltrow made good on her promise to help one special Avengers fan’s dream come true. The actress accompanied Robert Downey Jr. and Chris Evans as they paid a special visit to meet a young fan battling cancer.

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The trio traveled to San Diego, California, to visit Ryan Wilcox, an 18-year-old who has been diagnosed with leukemia for the second time.

“Let’s do this,” Paltrow, 43, captioned a shot of Evans, 34, and Downey Jr., 51, at an airport tarmac on their way to San Diego.

Paltrow was the first to take notice of Wilcox, who had posted his story and desire to meet the stars on social media using the hashtag “#ryanstrong.” After learning of the young fan’s battle, the actress promised to help get her Avengers costars to meet Wilcox.

And needless to say, she did not disappoint.

“She told me this is a gift from one mom to another mom,” Ryan’s mom, Amy Wilcox, told the Associated Press. “She knew how happy it would be for me to see Ryan so happy.”

“Today @ryanwilcox0303 got a little surprise. Thank you to the incredible #chrisevans and my better work half @robertdowneyjr for being the men you both are. And thank you to the Wilcox family for your hospitality!” she wrote on a sweet snap of Evans and Downey smiling alongside Wilcox. She also posted a video of Downey and Evans with her in a chopper while en route to Wilcox.

The group spent the afternoon hanging out with Wilcox and his family and even signing a few autographs – including one on his bedroom wall.

“It was really cool hanging out with them. That really picked me up,” said Wilcox. “I’m going to get through this.”

But before even meeting Wilcox, Evans had sent him a personalized video encouraging him to “keep fighting” and praising his allegiance to Captain America.