Jack and Annie’s tree house takes them to an exotic island where they discover the power of friendship and the simple pleasures in everyday life. Jan. 5-21. Fri., 7 pm; Sat. & Sun., 2 pm. Pajama Night on Jan. 12, 7 pm; sensory-friendly performance on Jan. 13, 11 am. For tickets, visit www.juniortheatre.com.